Compilation performance comparison of gcc3.4.1 and gcc3.5.0 2004-08-30 on MICO sources
Mike Stump
mrs@apple.com
Tue Aug 31 19:30:00 GMT 2004
On Aug 31, 2004, at 3:49 AM, Steven Bosscher wrote:
> This may also just be noise. Some passes run so fast that the
> time vars are not accurate enough to record it.
We at apple use ~10ns clocks to record times... works better... Only
problem, getting user/sys time out of the kernel into user space, so
that merely grabbing time isn't costly. :-( Not really a problem, as
wall is the only thing you can trust, and what matters the most anyway.
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