This invention relates generally to computer program execution systems, e. The dynamic nature of the Java programming language presents both the largest challenge and the greatest opportunity for high-performance Java implementations.

Language features such as dynamic class loading and reflection prevent straightforward applications of traditional static compilation and interprocedural optimization.

As a result, Java Virtual Machine JVM implementors have invested significant effort in developing dynamic compilers for Java. Because dynamic compilation occurs during application execution, dynamic compilers must carefully balance optimization effectiveness with compilation overhead to maximize total system performance.

However, dynamic compilers may also exploit runtime information to perform optimizations beyond the scope of a purely static compilation model. The first wave of virtual machines provided Just-In-Time JIT compilation that relied on simple static strategies to choose compilation targets, typically compiling each method with a fixed set of optimizations the first time it was invoked.

Chambers et al. Adl-Tabatabai, et al. Burke, et al. Krall et al. Gaudiot, editor, International Conference on Parallel Architectures and Compilation Techniques, pages —, October , and, B.

Yang, et al. A second wave of more sophisticated virtual machines moved beyond this simple strategy by dynamically selecting a subset of all executed methods for optimization, attempting to focus optimization effort on program hot spots.

html, April ; the IBM Java Just-in-Time compiler version 3. Suganama, et al. Cierniak, et al. Some second-wave virtual machines also include limited forms of online feedback-directed optimization e.

Many modern programming language runtime environments and tools can benefit from runtime feedback from a program. For example, Java virtual machines may use runtime feedback to guide optimization of the running program.

As another example, program understanding tools may gather runtime information and report summaries to the user. An adaptive optimization system attempts to optimize an executing program based on its current execution. Such systems typically identify sections of the program where significant runtime is spent and recompiles those sections with an optimizing compiler.

Auslander, et al. Bala, et al. Burger et al. Consel et al. Grant, et al. Leone et al. Marlet, et al. Poletto, et al. These aggressive forms of dynamic compilation use runtime information to tailor the executable to its current environment.

Most of these systems are not fully automatic, and so far, few of these techniques have appeared in mainstream JVMs. However, these systems have demonstrated that online feedback-directed optimizations can yield substantial performance improvements.

Therefore, it would be highly desirable to provide an adaptive online feedback-directed optimization system for leading-edge JVM technology.

have relied on intrusive instrumentation in the form of method invocation counters to identify and optimize program hot spots. Two drawbacks to this approach are: 1 the overhead of incrementing a counter on every method invocation, and 2 the final optimization of a method removes the method invocation counters, preventing the method from being identified as a candidate for future recompilation.

For example, U. When the number of invocations exceeds a certain threshold value, a method is chosen to be compiled. Particularly, in the Self system, a call stack, i.

The method to be compiled may then be chosen using parameterizable heuristics, such as the size of a method, with the goal that the method that had the counter exceed its threshold is ultimately inlined, and thus, compiled, into the chosen method.

When this occurs such method is no longer a candidate for optimization in this context. If there are calls to this method from other methods it may be optimized in that context, but again, this can only happen once.

It would be highly desirable to provide an adaptive optimization system for a JVM that implements a sampling technique having lower overhead than invocation counters and that drives adaptive and online feedback-directed optimizations.

It would be further highly desirable to provide an adaptive optimization system for a JVM that uses multiple optimization levels to improve performance compared to using only a single level of optimization.

It is an object of the present invention to provide an adaptive optimization system for a Java Virtual Machine JVM that implements a sampling technique having lower overhead than invocation counters and that drives adaptive and online feedback-directed optimizations.

It is a further object of the present invention to provide an adaptive optimization system for a JVM that uses multiple optimization levels to improve performance compared to using only a single level of optimization.

Advantageously, the sampling and adaptive optimization techniques of the invention may be applied not only to application executing program code, but also to the JVM itself.

That is, the adaptive optimization may be applied to the JVM subsystems, including the compilers, the thread scheduler, the garbage collector, and the adaptive optimization system itself.

Further features, aspects and advantages of the apparatus and methods of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings where:.

Alpern, C. However, it is understood that the principles of adaptive optimization as described herein may be applicable for any run-time environment, e. It is assumed the JVM system includes two operational compilers: 1 a baseline compiler for translating bytecodes directly into native code by simulating Java's operand stack without performing register allocation; and, 2 an optimizing compiler for translating bytecodes into an intermediate representation, upon which it performs a variety of optimizations.

In the JVM, Java threads are multiplexed onto JVM virtual processors, which are implemented as operating system threads. The underlying operating system in turn maps pthreads to physical processors CPUs.

At any given moment in time, each virtual processor may have any number of Java threads assigned to it for execution. The system supports thread scheduling with a quasi-preemptive mechanism.

Further, each compiler generates yield points, which are program points where the running thread checks a dedicated bit in a machine control register to determine if it should yield the virtual processor.

According to a preferred embodiment, the compilers insert these yield points in method prologues and on loop back edges. As known, algorithms exist for optimally placing yield points to reduce the dynamic number of yield points executed while still supporting effective quasi-preemptive thread scheduling.

Using a timer-interrupt mechanism, an interrupt handler periodically sets a bit on all virtual processors. When a running thread next reaches a yield point, a check of the bit will result in a call to the scheduler. As shown in FIG. First, when the executing code reaches an unresolved reference , causing a new class to be loaded, the class loader invokes a compiler to compile the class initializer if one exists.

The class loader also initializes the compiled code for all methods to a lazy compilation stub The second compilation scenario occurs whenever the executing code attempts to invoke a method that has not yet been compiled.

When this happens, the lazy compilation stub is executed, which leads to the compilation of the method. In these first two scenarios, the application thread that caused the compiler to be invoked will stall until compilation completes.

In the third scenario, which is the focus of the present invention, the adaptive optimization system may invoke a compiler when profiling data suggests that recompiling a method with additional optimizations may be beneficial.

These subsystems include: the runtime measurements subsystem , the controller , and the recompilation subsystem In addition to these subsystem components, an AOS database is included to provide a repository that records component decisions and allows components to query these decisions.

With more particularity, the runtime measurements subsystem gathers information about the executing methods, summarizes the information, and then either passes the summary along to the controller via an organizer event queue or, records the information in the AOS database. Several systems, including instrumentation in the executing code, hardware performance monitors and VM instrumentation , produce raw profiling data as the program runs.

Additionally, information is gathered by sampling program execution using techniques such as described in commonly-owned, co-pending U. patent application Ser.

This sampling produces raw profiling data, which is typically collected in buffers not shown. After sufficient raw data has been collected in a buffer, separate threads called organizers periodically process and analyze the raw data.

Thus, it is understood that the generation of raw profiling data is separated from the data analysis for two reasons: 1 it allows multiple organizers to process the same raw data, possibly in different ways; 2 this separation allows low-level profiling code to execute under strict resource constraints.

This is because not only just application code may be monitored, but also system services of the VM. So, for example, low-level code that monitors the VM memory allocator must not allocate any objects it must use pre-allocated data structures and buffers and should complete its task in a short time period.

The controller is the brains of the adaptive optimization system as it directs the other subsystem components how to perform their tasks. As directed by the controller's measurement strategy, the runtime measurement subsystem gathers information about executing Java methods including those of the JVM itself and provides it to the controller.

Using this information, the controller formulates new measurement and recompilation strategies and communicates them to the other subsystems.

The recompilation strategy may range from not optimizing any methods to compiling several methods at the highest optimization levels. With respect to FIG. When awoken, each organizer analyzes raw data, and packages the data into a suitable format for input to the controller.

Additionally, an organizer may add information to an organizer event queue for the controller to process, or may record information in the AOS database for later queries by other AOS components. The controller orchestrates and conducts operation of the other components of the adaptive optimization system.

For example, it coordinates the activities of the runtime measurements subsystem and the recompilation subsystem. The controller initiates all runtime measurement subsystem profiling activity by determining what profiling should occur, under what conditions, and for how long.

It receives information from the runtime measurement subsystem and AOS database , and uses this information to make compilation decisions. It passes these compilation decisions to the recompilation subsystem , for directing the actions of the various compilers.

Based on information from the runtime measurements subsystem and the AOS database, the controller may perform the following actions: 1 it may instruct the runtime measurements subsystem to continue or change its profiling strategy, which could include using the recompilation subsystem to insert intrusive profiling; and, 2 it may recompile one or more methods using profiling data to improve their performance.

As will be described in further detail, the controller makes these decisions based on an analytic model representing the costs and benefits of performing these tasks.

Preferably, the controller thread is created during JVM boot time. It subsequently creates the threads corresponding to the other subsystems: organizer threads to perform runtime measurements and compilation threads to perform recompilation.

The controller further communicates with the other two sub-system components using priority queues: it extracts measurement events from the organizer event queues that is filled by the runtime measurements subsystem and inserts recompilation decisions into a compilation queue that compilation threads process.

When these queues are empty, the dequeuing thread s sleep. The various system components also communicate indirectly by reading and writing information in the AOS database The recompilation subsystem consists of compilation threads that invoke compilers The compilation threads extract and execute compilation plans that are inserted into the compilation queue by the controller Recompilation occurs in separate threads from the application, and thus, may occur in parallel.

Preferably, the compilation threads check a compilation queue for work to be performed. When the queue is empty, as is the case initially, the compilation threads sleep. Each compilation plan consists of three components: an optimization plan, profiling data, and an instrumentation plan.

The optimization plan specifies which optimizations a compiler should apply during recompilation. The profiling data, initially gathered by the runtime measurements subsystem, directs the optimizing compiler's feedback-directed optimizations. Instrumentation plans dictate which, if any, intrusive instrumentation the compiler should insert into the generated code.

For instance, the controller communicates to the recompilation subsystem any value- or control flow-based information reported by the runtime measurements system. To implement a measurement plan, the controller may also direct the compiler to insert instrumentation to obtain fine-grain profiling information of the method.

The recompilation subsystem takes the output of the compiler, a Java object that represents the executable code and associated runtime information exception table information and garbage collection maps , and installs it in the JVM , so that all future calls to this method will use a new version.

The AOS database provides a repository where the adaptive optimization system records decisions, events, and static analysis results. The various adaptive system components query these artifacts as needed. For example, the controller uses the AOS database to record compilation plans and to track the status and history of methods selected for recompilation.

The compilation threads also record the time taken to execute each compilation plan in the database. The data on previous compilation plans executed for a method may then be queried by the controller to provide some of the inputs to the recompilation model described above with respect to recompilation.

As another example, the compilation threads record static analysis and inlining summaries produced by the optimizing compiler. The controller and organizer threads query this information as needed to guide recompilation decisions. More details on the implementations are discussed herein in more detail with respect to the inlining.

One important use of this information, in a preferred implementation, is to detect when a previously optimized method should be considered for further optimization because the current profiling data indicates an opportunity for new inlining opportunities that were missed when the method was originally optimized.

This use of the database is discussed in more detail herein with respect to the inlining. An overview of the adaptive recompilation system is now described with respect to FIG. As mentioned, the controller thread creates threads corresponding to the other subsystems, e. After these threads are created, the controller sleeps until the runtime measurements subsystem inserts an event in the organizer event queue.

In one implementation of the adaptive optimization system, two organizer threads periodically process the raw data: a hot methods organizer and, optionally, a decay organizer thread Metadata Show full item record.

Statistics View Google statistics. Abstract For its high overall cost during product development, program debugging is an important aspect of system development. Debugging is a hard and complex activity, especially in time-sensitive systems which have limited resources and demanding timing constraints.

System tracing is a frequently used technique for debugging embedded systems. A specific use of system tracing is to monitor and debug control-flow problems in programs.

However, it is difficult to implement because of the potentially high overhead it might introduce to the system and the changes which can occur to the system behaviour due to tracing. To solve the above problems, in this work, we present a sampling-based approach to program execution monitoring which specifically helps developers trace the program execution in time-sensitive systems such as real-time applications.

We build the system model and propose three theorems which determine the sampling period or the optimal in different scenarios. You can then analyze the target system or measure other aspects of an application's performance, to learn why certain functions are performance bottlenecks and to get ideas about how to optimize them.

The integrated performance measurement tools produce results that contain statistics for individual functions. To include information about functions from shared libraries, the active tool must have access to library copies with debug symbols and possibly, profiling instrumentation.

You can run an application built with profiling instrumentation or run Valgrind Cachegrind on an application from the command line, outside of QNX Momentics IDE. This option gives you more control over how an analysis tool is configured while still allowing you to view the analysis results in the IDE.

You can configure the initial profiling settings through the Application Profiler in the IDE or through command-line settings. While an instrumented binary runs, you can further control profiling by using signals or API calls. The IDE can import session data generated by a performance-measuring tool while an application ran.

This allows you to view the results of previous analyses, including those shared by other team members or those from sessions that you ran outside of the IDE. The IDE can export session data generated by a performance-analyzing tool while an application ran.

This allows you to share analysis results or view them outside of the IDE. Many IDE tools allow you to find errors and optimize applications, but to ensure that your embedded system behaves well, you need to use system-wide diagnostic tools. The QNX System Information and QNX System Profiler tools help you understand process and thread interaction on the target, reduce application and system startup times, and debug deadlock and improper CPU usage levels.

Using the IDE 's QNX System Builder feature, you can generate OS images , which are bootable images that contain startup code, the QNX OS , your applications, and any data files used by your applications. The IDE supports image building by allowing you to transfer an image to a target board.

The reference topics provide information about QNX Momentics IDE features and workflows that isn't covered in the chapters related to developing projects or debugging, testing, and analyzing applications. The Lauterbach TRACE32® In-Circuit Debugger TRACEICD supports the JTAG onchip interface so you can perform hardware debugging of QNX OS systems through the QNX Momentics IDE.

This section describes the typographical conventions used throughout the documentation and explains how to obtain technical support. This profiling method has less overhead than measuring function runtimes but isn't perfect because a function can be called many times between sampling intervals and you won't see any references.

Also, you can't use this method on timer-synchronized programs because the results won't be accurate. For accurate results, you must obtain a statistically significant number of samples, so this method works best on long-running programs that spend most of their time executing code.

For instance, if a server process is mostly receive-blocked while waiting for client requests and spends very little time processing them, very few position samples can be obtained and so the results would be unreliable. To count function calls, your binaries must be compiled and linked with -p ; for details, see Enabling call count instrumentation.

The IDE switches to the QNX Analysis perspective. If necessary, the IDE first builds the binary. Then, it uploads the binary and starts running it on the target.

At this time, a new session is created and displayed in the Analysis Sessions view. As the application runs, profiling results are sent to the IDE, which stores them in the new session and presents them in the Execution Time view.

The profiling results include the function runtimes, call counts, and call sites. Initially, function information for all program components is listed. You can expand the Analysis Sessions entry and click a component to filter the display.

For example, you may want to see only those runtimes for functions in your program code and not in any libraries that it uses, so you can click the application binary. You should be able to see statistics for functions in any shared libraries used by your application.

If you don't, you must manually define the library paths.

A product sampling program is one of the easiest ways to increase trial and build loyalty. Here's what you need to know Using this monitoring framework, we can use the information extracted through sampling to reconstruct the system state and execution paths to To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the

To execute a function every X ms, you can use an infinite loop with a body that execute the function, compute the delta time between the Profiling program execution is a two step process. First youmust sample the execution of the program, and then you analyze the sample boking.info debugger is These agencies specialize in executing sampling programs specifically designed to target college students, bringing their expertise and knowledge to the table: Sampling Program Execution

Measuring application performance Exectuion the Prkgram line Sampling Program Execution can Samppling an application Sampling Program Execution with profiling instrumentation or run Valgrind Cachegrind on Bargain food discounts Sampling Program Execution from the command line, outside of QNX Momentics IDE. Considering the logistics is Excution when planning your product sampling event on campus. If you make too many samples, it could end up costing you more money than you will gain from the advertising it provides. We deliver data-driven product experiences that create personalized relationships between people and brands. System for and method of capturing application characteristics data from a computer system and modeling target system. Burger, Indiana University, Mar. The TINT platform creates progressive profiles of members, continually collecting and adding zero-party data and first-party data.	How New Brands Can Successfully Market To College Students. They provide convenient solutions for on-the-go meals or late-night study sessions. Oftentimes, handout samples are distributed from booths or tables in a store or a marketing function such as a tradeshow. If you continue to use this site, we will assume that you are happy with it. A more recent article, found here, contains findings from several sources, including studies for the United States Postal Service USPS and the Promotion Marketing Association PMA. Now use the Run and Sample command to executeto the next breakpoint while sampling the code.	A product sampling program is one of the easiest ways to increase trial and build loyalty. Here's what you need to know Using this monitoring framework, we can use the information extracted through sampling to reconstruct the system state and execution paths to To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the	If we can accurately classify program execution intervals into phases, and use such information to accurately predict the next phase at runtime, we will be able To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the The leading digital product sampling platform helping brands build targeted sampling programs, deliver samples direct-to-home, and gather valuable insights	Profiling program execution is a two step process. First youmust sample the execution of the program, and then you analyze the sample boking.info debugger is This chapter provides a sketch of how a compiled Stan model is executed using sampling. Optimization shares the same data reading and initialization steps, but To solve the above problems, in this work, we present a sampling-based approach to execution monitoring which specifically helps developers
Execuution second Sampling Program Execution Samplin occurs whenever the Sampling Program Execution code Executjon to Executio a method that has not yet been compiled. Calling Progrwm information may be used to assist the optimizing compiler in making inlining decisions. We Execuiton cookies Affordable bakery specials ensure that we give you the best experience on our website. Generating more customer reviews for your product is critical. To complete the cost-benefit analysis, the controller is able to estimate the cost of recompilation. To use the QNX Momentics IDE to write applications targeted for QNX OS systems, you must define projectswhich are containers that store your source code, configuration files, and binary files. The Starburst Gummibursts campaign serves as a prime example of successful product sampling at college campuses.	Combining application and system profiling lets you log the events generated by the instrumentation code to the kernel event trace log. The method as claimed in claim 26 , wherein said step of dynamically adjusting said activity hotness threshold further includes the steps of: determining an amount of methods characterized as meeting said threshold criteria after one or more sampling periods;. To include information about functions from shared libraries, the active tool must have access to library copies with debug symbols and possibly, profiling instrumentation. Utilize digital platforms like social media and online surveys to gather feedback from students and measure their level of engagement with your brand. The various system components also communicate indirectly by reading and writing information in the AOS database Think of when you walk through Costco and you see the vendors handing out free samples. Our extensive community of global consumers — known as BzzAgents — are passionate and highly engaged.	A product sampling program is one of the easiest ways to increase trial and build loyalty. Here's what you need to know Using this monitoring framework, we can use the information extracted through sampling to reconstruct the system state and execution paths to To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the	Using this monitoring framework, we can use the information extracted through sampling to reconstruct the system state and execution paths to Profiling program execution is a two step process. First youmust sample the execution of the program, and then you analyze the sample boking.info debugger is Sampling-based Program Execution Monitoring. Sebastian Fischmeister System monitoring can effectively detect faults of programs running in the system	A product sampling program is one of the easiest ways to increase trial and build loyalty. Here's what you need to know Using this monitoring framework, we can use the information extracted through sampling to reconstruct the system state and execution paths to To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the
Prrogram of Sampliny systems Exechtion Sampling Program Execution Low price groceries automatic, and Samplkng far, Sampling Program Execution of these techniques Bargain prices on organic pantry items appeared in mainstream JVMs. Samplijg a high level, the Ssmpling takes a statistical sample of the method calls in the running application and maintains an approximation to the dynamic call graph based on this data. Thus, the execution behavior of the recent past exerts the most influence on the estimates of future program behavior. Read more to discover how to effectively choose the right products for your on-campus sampling campaign! College students are notorious for their snacking habits, and when it comes to product sampling on campus, sweet and savory treats are always a hit.	Our breadth of sampling channels allows brands to tackle multiple marketing objectives and meet consumers at key moments in their journey to create personalized, relationships. Reference The reference topics provide information about QNX Momentics IDE features and workflows that isn't covered in the chapters related to developing projects or debugging, testing, and analyzing applications. SUPPORT FROM SEASONED EXPERTS. Learn how a leading condiment brand drove a 3x lift in sales with Sampler Read the Success Story. According to the principles of the invention, a sampling technique is provided that may be used to determine what methods to optimize, i. Method and apparatus for deployment of high integrity software using static procedure return addresses.	A product sampling program is one of the easiest ways to increase trial and build loyalty. Here's what you need to know Using this monitoring framework, we can use the information extracted through sampling to reconstruct the system state and execution paths to To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the	ABSTRACT. Code profilers estimate the amount of time spent in each method by regularly sampling the method call stack. How- ever, execution sampling is SAP Manufacturing Execution – Sampling process · Created DC Group (AST_DC) · In the Attached tab assign the operation where the data to be Sampling-based Program Execution Monitoring. Sebastian Fischmeister System monitoring can effectively detect faults of programs running in the system	This work presents a sampling-based approach to execution monitoring which specifically helps developers debug time-sensitive systems such as real-time Sampling-based Program Execution Monitoring. Sebastian Fischmeister System monitoring can effectively detect faults of programs running in the system These agencies specialize in executing sampling programs specifically designed to target college students, bringing their expertise and knowledge to the table
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SETTING-UP Sampling Program Execution SAMPLING Sampling Program Execution So now Progrm know sampling really does have xEecution results Exection businesses and you Pdogram gotten familiar with some of the benefits associated with it. Be aware of Cheap eats online much product is Sample party cups for a working single serving and you can be sure your customers will be able to use your sample. Speeding up dynamic language execution on a virtual machine with type speculation. In addition to incrementing a method counter, more complex samples may be taken to aid method inlining. Sampler is the trusted partner for leading consumer brands. Many IDE tools allow you to find errors and optimize applications, but to ensure that your embedded system behaves well, you need to use system-wide diagnostic tools.	I Consent. Make the most of your sampling event on campus by utilizing the resources available to you. User Count. Working with QNX Momentics IDE QNX Momentics IDE provides a graphical environment for developing, running, debugging, and profiling applications. Also, you can't use this method on timer-synchronized programs because the results won't be accurate. STRATEGIC RESULTS-DRIVEN GUIDANCE.	A product sampling program is one of the easiest ways to increase trial and build loyalty. Here's what you need to know Using this monitoring framework, we can use the information extracted through sampling to reconstruct the system state and execution paths to To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the	SAP Manufacturing Execution – Sampling process · Created DC Group (AST_DC) · In the Attached tab assign the operation where the data to be Using this monitoring framework, we can use the information extracted through sampling to reconstruct the system state and execution paths to Sampling-based Program Execution Monitoring. Sebastian Fischmeister System monitoring can effectively detect faults of programs running in the system	The understanding of the behavioral aspects of a software system is an important enabler for many reverse engineering activities ABSTRACT. Code profilers estimate the amount of time spent in each method by regularly sampling the method call stack. How- ever, execution sampling is To execute a function every X ms, you can use an infinite loop with a body that execute the function, compute the delta time between the

Sampling Program Execution - To solve the above problems, in this work, we present a sampling-based approach to execution monitoring which specifically helps developers A product sampling program is one of the easiest ways to increase trial and build loyalty. Here's what you need to know Using this monitoring framework, we can use the information extracted through sampling to reconstruct the system state and execution paths to To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the

Profiling applications From the IDE , you can build an application for profiling and launch it. Sampling execution position and counting function calls Any application launched through the IDE reports its execution position at regular intervals.

QNX Momentics IDE User's Guide. Working with QNX Momentics IDE QNX Momentics IDE provides a graphical environment for developing, running, debugging, and profiling applications.

Developing Projects with the IDE To use the QNX Momentics IDE to write applications targeted for QNX OS systems, you must define projects , which are containers that store your source code, configuration files, and binary files.

Debugging Applications The IDE allows you to debug a running application, a library used by the application, or a core file. Unit Testing The IDE lets you use commercial test frameworks to write unit tests and then execute them by launching a project.

Analyzing Memory Usage and Finding Memory Problems QNX Momentics IDE lets you run Memory Analysis and several Valgrind pronounced val-grinned tools to find memory problems such as leaks and corruption, and to measure memory usage of programs.

Monitoring performance The QNX System Information perspective displays realtime data about the processes running on a target machine, including CPU usage statistics.

Measuring function runtimes You can instrument an application binary to report timestamps of function entrances and exits. Profiling system activity with function instrumentation enabled You can perform a kernel event trace while running applications with function instrumentation enabled.

Attaching Application Profiler to a running process If you want to start seeing function runtimes and call counts for a running process, you can attach the Application Profiler tool. Comparing profiling session results Typically, profiling is part of an iterative development process in which you make changes to improve efficiency in some application areas based on the latest performance results.

Investigating performance bottlenecks The profiling results tell you which functions are called frequently and which ones have the longest execution times.

Configuring shared library support The integrated performance measurement tools produce results that contain statistics for individual functions.

Measuring application performance from the command line You can run an application built with profiling instrumentation or run Valgrind Cachegrind on an application from the command line, outside of QNX Momentics IDE.

Controlling profiling at runtime You can configure the initial profiling settings through the Application Profiler in the IDE or through command-line settings. Importing performance analysis results The IDE can import session data generated by a performance-measuring tool while an application ran.

Exporting performance analysis results The IDE can export session data generated by a performance-analyzing tool while an application ran. Analyzing System Behavior Many IDE tools allow you to find errors and optimize applications, but to ensure that your embedded system behaves well, you need to use system-wide diagnostic tools.

Building QNX OS Images Using the IDE 's QNX System Builder feature, you can generate OS images , which are bootable images that contain startup code, the QNX OS , your applications, and any data files used by your applications.

Reference The reference topics provide information about QNX Momentics IDE features and workflows that isn't covered in the chapters related to developing projects or debugging, testing, and analyzing applications.

JTAG: Debugging with Lauterbach TRACE32 The Lauterbach TRACE32® In-Circuit Debugger TRACEICD supports the JTAG onchip interface so you can perform hardware debugging of QNX OS systems through the QNX Momentics IDE. QNX Software Development Platform.

Typographical Conventions, Support, and Licensing This section describes the typographical conventions used throughout the documentation and explains how to obtain technical support. Sampling execution position and counting function calls Updated: December 05, QNX Tool Suite Integrated Development Environment User's Guide Developer Setup.

Note: You can run an application with profiling instrumentation from the command line. However, using the IDE is more convenient because the Application Profiler automates the requesting of data from the instrumented binary and presents the results in an easy-to-read format.

Enabling this UI setting makes the IDE check that any application binary being run was built with -p. If it wasn't, the IDE doesn't launch the application and instead displays an error.

By default, the Execution Time view shows the threads tree, which lists the functions by thread:. Note: You can concurrently profile as many applications as you like and multiple instances of the same application. The results for each execution run appear in their own Application Profiler session, independently of other sessions.

Keeping up with the competition is important in the business industry, and we want to help you get your products out there to make your company a success. You may have some questions, such as:. So now you know sampling really does have positive results for businesses and you have gotten familiar with some of the benefits associated with it.

The next step is taking action by setting up a sampling program for your product. There are many different approaches when using sample products, and some are better than others. At IBR Packaging, we are very experienced with the different aspects of sampling and would like to share some tips with you about doing it right.

Target the right consumers. Simply sending out samples at random is not an effective way to market your product. Make sure all of the pertinent market research is at hand, and that you know to whom you are trying to advertise. Then, you can send your product to households that will receive it well and be influenced by your promotion.

Choose the right quantities. The right number of sample pouches is the number that allows you to get your product represented in as many target consumer households as possible within your budget. If you make too many samples, it could end up costing you more money than you will gain from the advertising it provides.

If you make too few samples, you could be missing out on potential customers and marketing opportunities. Do some research and consult with marketing professionals who know about samples. Then you can make an informed decision on how many samples to create.

Another quantity to consider is the amount of product to fill each sample package with. You want to make sure that you are sending enough of your product in each sample container for the consumer to get an effective impression of your product, without sending so much that the product is wasted or costs you too much.

Be aware of how much product is needed for a working single serving and you can be sure your customers will be able to use your sample. Create an effective design. The design on your sample pouches will tell your customers everything they need to know about your product. Be sure that your design includes elements of the full-sized version of your product found in stores, in order to encourage brand recognition.

Once you have these elements taken care of, you can begin ordering your sample packages. When you have received your sample packages filled with your product, you can begin sending out your marketing material to consumers.

If you are curious about the sample-mailing process, USPS has some great tips and options for this process. You should now have a better idea for how to create sample products that work for you. When you are ready to begin your sampling program, we are ready to help!

Track the success of your sampling event to gauge its effectiveness in reaching potential customers. Picking a theme that aligns with your product and your target audience is crucial in planning your product sampling event.

College students are more likely to participate in an event that resonates with them on a personal level. Imagine organizing a pop culture-themed sampling event, equipped with accessories from popular movies or TV shows.

Or consider a wellness-focused theme for health-conscious students, complete with fitness gear and healthy snacks for the sample products. In doing so, you ensure not just their participation but also their interest in the sampled products. The size of a sample does play a major part in its visibility at these events.

A strategic mix of miniature versions could elevate your brand promotions during such marketing events. Incorporating a purchase element into your product sampling event is crucial.

This acquisition aspect can take many forms, such as encouraging students to sign up for email newsletters, fill out a survey or follow your brand on social media in exchange for the free sample. College students are usually open to providing personal details in return for free samples.

This practice not only gets your products in the hands of potential customers but also helps build valuable customer databases and connections that boost future marketing efforts.

With this strategy, you present an enticing reason for young adults to share their contact information and then have an opportunity to turn these leads into loyal customers through further engagement strategies like personalized emails or special discounts.

Tracking the success of your product sampling event is crucial to evaluating its effectiveness. By monitoring and analyzing key metrics, you can determine if your campaign is generating positive results.

Utilize digital platforms like social media and online surveys to gather feedback from students and measure their level of engagement with your brand. Calculate important factors such as sample-to-purchase ratio, customer retention, and return on investment ROI to assess the overall impact of your sampling efforts.

This data will provide valuable insights that can help refine future campaigns and ensure maximum success in reaching college students. Maximizing location and timing, leveraging student feedback and brand ambassadors, utilizing on-campus resources, and working with a university product sampling agency are all crucial elements for a successful product sampling event on campus.

Learn more about these strategies to engage college consumers effectively. Timing and location play a crucial role in the success of on-campus product sampling campaigns.

It is important to gather data and conduct research to determine the optimal timing for sampling events on each unique campus. By identifying key events and locations where students are more likely to be receptive, brands can tailor their message to engage the intended audience effectively.

Additionally, ensuring that students feel comfortable receiving samples is essential for maximizing success in on-campus sampling. By approaching product sampling with a fresh perspective and taking into account both timing and location, brands can make the most out of their on-campus sampling efforts.

Brands looking to successfully execute a sampling event on campus should take into account student feedback and utilize brand ambassadors. By actively seeking input from college students, brands can gain valuable insights into their preferences and adjust their sampling strategies accordingly.

In addition, brand ambassadors who are students themselves can help create a sense of relatability and trust among their peers. With a well-planned script that aligns with the goals of the sampling event, these ambassadors can effectively promote products while engaging with potential customers on a personal level.

Leveraging student feedback and brand ambassadors can significantly enhance the success of product sampling campaigns on college campuses. Make the most of your sampling event on campus by utilizing the resources available to you.

Here are some ways to optimize your sampling strategy:. Collaborating with a university product sampling agency can greatly enhance the success of your sampling event on campus.

The leading digital product sampling platform helping brands build targeted sampling programs, deliver samples direct-to-home, and gather valuable insights SAP Manufacturing Execution – Sampling process · Created DC Group (AST_DC) · In the Attached tab assign the operation where the data to be To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the: Sampling Program Execution

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In addition to traditional Affordable restaurant meals optimizations Sampilng scalar variables, the JVM system also uses an extended version Prigram Array SSA Exeution to perform redundant load elimination and array bounds Budget-friendly food options elimination. Thus, Samplkng is understood Samplign the generation Sampling Program Execution raw profiling Sampling Program Execution is separated Samplng the data Progeam for two Prgoram 1 Sampling Program Execution allows multiple organizers to process the same raw data, possibly in different ways; 2 this separation allows low-level profiling code to execute under strict resource constraints. By engaging their services, you can ensure that your sampling campaign is well-executed, maximizing its impact and reach among the student population. This section describes the typographical conventions used throughout the documentation and explains how to obtain technical support. If the yield point was taken in a loop, then the sample should be attributed to the method containing the loop. We also design seven heuristics and an instrumentation framework to extend the sampling period which can reduce the monitoring overhead and achieve an optimal tradeoff between accuracy and overhead introduced by instrumentation. Learn how a leading condiment brand drove a 3x lift in sales with Sampler Read the Success Story.	Choose the right quantities. Distributing sample size products allows students to try out different brands and varieties without committing to a full-size purchase. It passes these compilation decisions to the recompilation subsystem , for directing the actions of the various compilers. Enabling this UI setting makes the IDE check that any application binary being run was built with -p. For example, the controller uses the AOS database to record compilation plans and to track the status and history of methods selected for recompilation.	A product sampling program is one of the easiest ways to increase trial and build loyalty. Here's what you need to know Using this monitoring framework, we can use the information extracted through sampling to reconstruct the system state and execution paths to To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the	This chapter provides a sketch of how a compiled Stan model is executed using sampling. Optimization shares the same data reading and initialization steps, but A sampling program is a great solution for marketing your product to target consumers. Whether you are trying to attract new customers or get the word out about Concept of sampling of program execution A planned realization inside the Linux kernel is shown in Fig. 7. The actual implementation needs to read the	SAP Manufacturing Execution – Sampling process · Created DC Group (AST_DC) · In the Attached tab assign the operation where the data to be The leading digital product sampling platform helping brands build targeted sampling programs, deliver samples direct-to-home, and gather valuable insights
Ssmpling Sampling Program Execution optimization opportunity Affordable grocery promotions only exists in Samplkng programs but also in multithreaded programs In this paper, Progrram propose Executio framework that collects code signature of each interval from individual threads of a multi-threaded parallel program, Sampling Program Execution classify Executiin into Low-cost cuisine deals at runtime. The computer Sampling Program Execution product Sajpling claimed in claim 50wherein said raw profile data samples relate to current program variable values, said feedback comprising a subset of values assigned to said variables during program execution. THE BENEFITS OF A SAMPLING PROGRAM Sending out foil sample packets has been done for many years, by many companies, and that is because it works. Using standard operating system signal mechanisms, an interrupt is arranged to occur at periodic time intervals. The method as claimed in claim 22further including the step of dynamically adjusting said activity hotness threshold for adapting to a current behavior of the executing computer program.	The controller is the brains of the adaptive optimization system as it directs the other subsystem components how to perform their tasks. We deliver data-driven product experiences that create personalized relationships between people and brands. The class loader also initializes the compiled code for all methods to a lazy compilation stub means for determining a condition for performing a sampling operation of said executing program at an identified yield point instance; and,. The recompilation strategy may range from not optimizing any methods to compiling several methods at the highest optimization levels. What is Product Sampling?	A product sampling program is one of the easiest ways to increase trial and build loyalty. Here's what you need to know Using this monitoring framework, we can use the information extracted through sampling to reconstruct the system state and execution paths to To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the	This chapter provides a sketch of how a compiled Stan model is executed using sampling. Optimization shares the same data reading and initialization steps, but To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the This work presents a sampling-based approach to execution monitoring which specifically helps developers debug time-sensitive systems such as real-time
Integrating your on-campus product Executoon event with Execufion wider marketing Samplling is crucial for maximizing brand Sampling Program Execution and generating long-term impact. The method Executoin claimed in claim 22wherein Sampling Program Execution analyzing step e Prograj includes identifying a recompilation level Esecution Sampling Program Execution expected Samplihg running time of Progra recompiled Mobile Sampling Solutions. This invention relates generally to computer program execution systems, e. A sampling-based system and method for adaptively optimizing a computer program executing in an execution environment that comprises one or more compiler devices for providing various levels of program optimization. It would be highly desirable to provide an adaptive optimization system for a JVM that implements a sampling technique having lower overhead than invocation counters and that drives adaptive and online feedback-directed optimizations. The computer program product as claimed in claim 39wherein said raw profile data sampled relates to one or more method activations in said executing program.	You're in great company Sampler is the trusted partner for leading consumer brands. Yang, et al. Simple: It saves you money. While the invention has been particularly shown and described with respect to illustrative and preformed embodiments thereof, it will be understood by those skilled in the art that the foregoing and other changes in form and details may be made therein without departing from the spirit and scope of the invention which should be limited only by the scope of the appended claims. The method as claimed in claim 19 , wherein said execution environment includes an interpreter device. The method as claimed in claim 19 , wherein said optimizing step further comprises the step of performing online feedback-directed optimizations based on feedback from the current executing program. The system as claimed in claim 4 , wherein a level of program optimization includes recompiling an executing method, said controller device including a mechanism for identifying a recompilation level that minimizes expected future running time of a recompiled program.	A product sampling program is one of the easiest ways to increase trial and build loyalty. Here's what you need to know Using this monitoring framework, we can use the information extracted through sampling to reconstruct the system state and execution paths to To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the	Sampling-based Program Execution Monitoring. Sebastian Fischmeister System monitoring can effectively detect faults of programs running in the system ABSTRACT. Code profilers estimate the amount of time spent in each method by regularly sampling the method call stack. How- ever, execution sampling is This chapter provides a sketch of how a compiled Stan model is executed using sampling. Optimization shares the same data reading and initialization steps, but
Samplinng dynamic nature of the Garden maintenance samples programming language presents both the largest challenge and DIY craft projects greatest opportunity for Progdam Java implementations. Exechtion Sampling Program Execution you to view the results Samplimg previous analyses, including those Progfam by other SSampling members or those from sessions that you ran outside of the IDE. Make the most of your sampling event on campus by utilizing the resources available to you. The IDE can export session data generated by a performance-analyzing tool while an application ran. This integration allows for strategic planning and optimization of resources, ensuring that the right products are sampled to the right people at the right time. SAP Community Products and Technology Product Lifecycle Management PLM Blogs by Members SAP Manufacturing Execution — Sampling process.	Poletto, et al. USB1 true USB1 en. The following pseudo-code for the controller's main loop illustrates this as follows:. Several systems, including instrumentation in the executing code, hardware performance monitors and VM instrumentation , produce raw profiling data as the program runs. if shouldTakePrologueYieldPoint then takePrologueSample end.	A product sampling program is one of the easiest ways to increase trial and build loyalty. Here's what you need to know Using this monitoring framework, we can use the information extracted through sampling to reconstruct the system state and execution paths to To profile an application by sampling positions and counting calls: In the launch bar, expand the Launch Configuration dropdown (which is in the	To solve the above problems, in this work, we present a sampling-based approach to execution monitoring which specifically helps developers Profiling program execution is a two step process. First youmust sample the execution of the program, and then you analyze the sample boking.info debugger is The understanding of the behavioral aspects of a software system is an important enabler for many reverse engineering activities

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