Re: gettimeofday cost on intel?
Re: gettimeofday cost on intel?
- Subject: Re: gettimeofday cost on intel?
- From: Andrew Gallatin <email@hidden>
- Date: Tue, 9 May 2006 12:32:14 -0400 (EDT)
Matt Watson writes:
>
> On May 9, 2006, at 8:11 AM, Andrew Gallatin wrote:
>
> >
> > I need a cheap way to measure events with at least a 10ms granularity
> > that is monotonically increasing, regardless of the CPU my thread has
> > been scheduled upon.
>
> I'd be surprised if mach_absolute_time() does not work for this.
I did not know about this. Nm reveals its symbol in libc (at least on
ppc). Is it documented somewhere? Does it also use the commpage?
> gettimeofday() is implemented in the commpage for both PowerPC and
> Intel.
Great! Thanks,
Drew
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