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Re: Faster compilation speed: cache behavior
- From: kaih at khms dot westfalen dot de (Kai Henningsen)
- To: gcc at gcc dot gnu dot org
- Date: 21 Aug 2002 08:40:00 +0200
- Subject: Re: Faster compilation speed: cache behavior
- Comment: Unsolicited commercial mail will incur an US$100 handling fee per received mail.
- Organization: Organisation? Me?! Are you kidding?
- References: <jmfzx987za.fsf@desire.geoffk.org> <CE111330-B490-11D6-90A6-000393941EE6@apple.com>
mrs@apple.com (Mike Stump) wrote on 20.08.02 in <CE111330-B490-11D6-90A6-000393941EE6@apple.com>:
> On Tuesday, August 20, 2002, at 03:45 PM, Geoff Keating wrote:
> > Does Apple's memset use dcbz? I'm curious why memset should cause any
> > cache misses at all.
>
> The symbols mentioned are just one possible value of the pc within the
> millisecond (by default) when the sample was taken. The sample
Uh, I thought they were the exact instruction that caused the cache miss,
and this particular profile was *not* based on timed samples?!
MfG Kai