Messages in this thread | | | Date | Tue, 20 Nov 2001 22:19:26 -0200 (BRST) | From | Rik van Riel <> | Subject | Re: Swap |
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On Tue, 20 Nov 2001, David S. Miller wrote: > From: Rik van Riel <riel@conectiva.com.br> > Date: Tue, 20 Nov 2001 21:35:40 -0200 (BRST) > > On Tue, 20 Nov 2001, David S. Miller wrote: > > TLB misses add to the cost, and this overhead is more than > > "noise".
> The Apache folks were keeping it mapped across requests, > so even if it was "primed" (ie. pre-faulted), a read() into > a static buffer was still significantly faster.
Interesting. I wonder how read() and mmap() compare when the data is in highmem pages and we're facing a kmap()/kunmap() for read() ...
regards,
Rik -- Shortwave goes a long way: irc.starchat.net #swl
http://www.surriel.com/ http://distro.conectiva.com/
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