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High resolution process timing
- From: Lionel B <lionelbuk at yahoo dot co dot uk>
- To: cygwin at cygwin dot com
- Date: Wed, 20 Oct 2004 12:12:37 +0100 (BST)
- Subject: High resolution process timing
- Reply-to: cygwin at cygwin dot com
Greetings,
Is it possible in Cygwin (W2k, Pentium 4, gcc 3.3.3) to access a higher
resolution (or perhaps I mean "granularity") process CPU timer than the libc
clock() call? I am finding clock() inadequate for some code benchmarking.
[It is not clear to me whether this is indeed a Cygwin issue, or rather a
Windows issue and therefore OT here - apologies if so].
Having browsed the archives, it seems that it may well be possible to access
high-resolution *system* timers (perhaps using NT API calls to
QueryPerformanceCounter() & family), but I can see no way to achieve
per-process timing this way.
Any pointers appreciated,
--
Lionel B
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