Ah.. I’m sorry. The sample rate should not be 6803/3, because the 6803 is just process number. The 1st line says just :
"Sampling process 6803 for 3 seconds with 1 millisecond of run time between samples" So, sampling frequency is every 1 millisecond, and the whole sampling duration was 3 sec. Anyway.. Thank you very much for you explanation. JongAm Park > On Mar 17, 2015, at 3:11 PM, Greg Parker <gpar...@apple.com> wrote: > > >> On Mar 17, 2015, at 1:52 PM, JongAm Park <jongamp...@sbcglobal.net> wrote: >> >> Hello, >> >> I know that questions on tools are not relevant for this cocoa-dev, but I >> couldn’t find any relevant mailing list for tools like ‘sample’ or sampling >> using Activity Monitor GUI tool. >> So, let me ask it here, because all Cocoa programmers use such tools >> whenever needed. >> >> I have a process sample like this. >> >> Call graph: >> 1379 Thread_839846: Main Thread DispatchQueue_<multiple> >> + 1379 start (in Wirecast) + 52 [0x100a31074] >> + 1379 main (in Wirecast) + 1070 [0x100b3e16a] >> + 1379 eApp::Run(bool, zRecord*) (in libeva.dylib) + 779 >> [0x101033225] >> + 1379 eWindowManager_cocoa::MessageLoop() (in libeva.dylib) + 70 >> [0x101037932] >> + 1379 -[NSApplication run] (in AppKit) + 594 [0x7fff88cd2593] >> >> I can guess the number on the 1st (2nd?) on every row after + sign. It >> should be number of samples or how long a method/function take. >> >> According to MAN page for ‘sample’, it samples at every 1 msec. >> And >> http://stackoverflow.com/questions/10709577/spindump-analysis-instructions >> <http://stackoverflow.com/questions/10709577/spindump-analysis-instructions> >> says, it’s the number of samples. >> >> By looking at the numbers on children nodes, I guess so too. But is it >> really so? >> >> If there is a better mailing list for this kind of inquiry, please let me >> know. > > In the trace above, "1379" is the number of samples at that location. The > total number of samples and the sampling rate should be listed at the top of > the report: > Duration: 10.01s > Steps: 1001 (10ms sampling interval) > > Everything else is a description of the instruction's location. <Symbol name> > (in <library name>) + <byte offset> [<absolute address>]. A symbolicated > trace may add source file and line numbers. If multiple samples hit the same > symbol at different offsets (i.e. they were at different places in the same > function) then they may be aggregated into a single line with multiple > offsets listed. > > > -- > Greg Parker gpar...@apple.com Runtime Wrangler > > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
