Re^2: Perl thread profiler

I've wanted to use a profiler on a multithreaded program before. I ended up just making a copy with the communications and AI threads commented out, and ran a few iterations of the physics loop using canned data

It was a bit of trouble to ensure that the thread amputation didn't substantially alter the program flow, while making improvements to the two versions in parallel.

Comment on Re^2: Perl thread profiler

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Re^3: Perl thread profiler by BrowserUk (Patriarch) on Mar 30, 2012 at 14:11 UTC
I suspect from the OPs post, that he is looking for something like this, which is a very powerful tool. But, whilst I think it could be used to great affect to tune perl's internal implementation of threading; it is not so useful for tuning iThreads user code, as it is a binary level rather than source-code level profiler. Trying to separate out the affects of user code from those of the Perl runtime code is pretty much impossible. Like you, I also tend to tune my threaded Perl code by isolating each thread as far as possible and then tuning each thread in a stand-alone fashion. With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice. The start of some sanity?	[reply]
Re^4: Perl thread profiler by jain.shardul (Initiate) on Apr 12, 2012 at 17:49 UTC
I am basically looking to get the cpu/memory/blkio usage for each of the different threads in my process. I can get the usage for the process as a whole but that doesnt satisfy my purpose as I want to determine how my threads are effecting the box.	[reply]
Re^5: Perl thread profiler by BrowserUk (Patriarch) on Apr 12, 2012 at 18:04 UTC
On Windows, use perfmon.exe. With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice. The start of some sanity?	[reply]