Microsoft bbt working set

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The minimum working set size for the process, in bytes. The virtual memory manager attempts to keep at least this much memory resident in the process whenever the process is active. This parameter must be greater than zero but less than or equal to the maximum working set size. The default size is 50 pages for example, this is , bytes on systems with a 4K page size.

If the value is greater than zero but less than 20 pages, the minimum value is set to 20 pages. The maximum working set size for the process, in bytes. The virtual memory manager attempts to keep no more than this much memory resident in the process whenever the process is active and available memory is low. A soft page fault occurs when:. If several processes share a page, removing the page from the working set of one process does not affect other processes.

After a page is removed from the working sets of all processes that were using it, the page becomes a transition page. Transition pages remain cached in RAM until the page is either referenced again by some process or repurposed for example, filled with zeros and given to another process. If a transition page has been modified since it was last written to disk that is, if the page is "dirty" , then the page must be written to its backing store before it can be repurposed.

The system may start writing dirty transition pages to their backing store as soon as such pages become available. Visit the old blog! Binary Profile Feedback Optimization framework Basic Block Tools BBT : BBT is a suite of optimization tools designed to help reduce the working-set requirements for a Win32 application by applying advanced static analysis and code layout heuristics, and integrating profile data gathered from monitoring the program execution flow.

Build Verification Test often called smoke tests : A very small set of tests that check whether the app itself is worth even looking at. A set of tests that check whether important aspects of a particular feature work correctly. General Availability: Describes the point where all necessary commercialization activities have been completed and the software has been made available to the general market either via the web or physical media.

General Distribution Release, used for Updates and Hotfixes. Limited Distribution Release, used for Updates and Hotfixes.

Release To Manufacturing: Used to indicate that the software has met a defined quality level and is ready for mass distribution either by electronic means or by physical media.

Builds that pass all Exit Criteria tests and thus work well enough to be demoed and dogfooded. Technology Adoption Program Product Readiness: Obtain deep-dive feedback, early and throughout the development cycle.

Raspberry Pi Unboxing. That means it's actually possible for your application to have a memory leak that never manifests itself in the Private Bytes at all. Unlikely, but possible. Private Bytes are a reasonable approximation of the amount of memory your executable is using and can be used to help narrow down a list of potential candidates for a memory leak; if you see the number growing and growing constantly and endlessly, you would want to check that process for a leak.

This cannot, however, prove that there is or is not a leak. Rational Purify is another possibility. Microsoft also has a more general best practices document on this subject. There are more tools listed in this previous question. I hope this clears a few things up! Tracking down memory leaks is one of the most difficult things to do in debugging. Good luck. The definition of the perfmon counters has been broken since the beginning and for some reason appears to be too hard to correct.

A good overview of Windows memory management is available in the video " Mysteries of Memory Management Revealed " on MSDN: It covers more topics than needed to track memory leaks eg working set management but gives enough detail in the relevant topics. To give you a hint of the problem with the perfmon counter descriptions, here is the inside story about private bytes from " Private Bytes Performance Counter -- Beware!

The Private Bytes counter reports the commit charge of the process. That is to say, the amount of space that has been allocated in the swap file to hold the contents of the private memory in the event that it is swapped out. Note: I'm avoiding the word "reserved" because of possible confusion with virtual memory in the reserved state which is not committed. Private memory, is defined as memory allocated for a process which cannot be shared by other processes.

This memory is more expensive than shared memory when multiple such processes execute on a machine. You should not try to use perfmon, task manager or any tool like that to determine memory leaks.

They are good for identifying trends, but not much else. The numbers they report in absolute terms are too vague and aggregated to be useful for a specific task such as memory leak detection.

You ask about a tool recommendation: I recommend Memory Validator. Capable of monitoring applications that make billions of memory allocations. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. What is private bytes, virtual bytes, working set?

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