Re: which pages of the file are in the cache
Re: which pages of the file are in the cache
- Subject: Re: which pages of the file are in the cache
- From: Terry Lambert <email@hidden>
- Date: Tue, 18 Aug 2009 09:08:24 -0700
On Aug 18, 2009, at 6:17 AM, Joel Reymont <email@hidden> wrote:
Folks,
I'm tasked with improving Firefox startup performance on Mac OSX.
Is there a way to find out what pages of a file are in the
filesystem cache?
Is this a good list to discuss IO performance?
Thanks, Joel
My understanding of the performance issues there are that they are not
related to what's in the cache, at least not after the first run,
since we will preheat the cache for processes after we know what pages
are typically in use. It's actually my understanding that the issue is
one of having lots of static constructors which are not precomputed,
combined by a large API surface that requires vtable linkage fixup on
an API by API basis, which is also not precomputed (unless you ask fir
it via prebinding).
See also: <http://developer.apple.com/performance/appperformance.html>.
-- Terry
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