Messages in this thread | | | Date | Tue, 5 Feb 2002 14:21:55 +0000 | From | Pavel Machek <> | Subject | Re: [PATCH] Radix-tree pagecache for 2.5 |
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Hi!
> > > the biggest reason for this is that we *suck* at readahead for mmap.... > > > > Is there not also fault overhead and similar issues related to mmap(2) > > in general, that are not present with read(2)/write(2)? > > If a fault is more expensive than a system call, we're doing > something wrong in the page fault path ;)
You can read 128K at a time, but you can't fault 128K... Pavel
-- Philips Velo 1: 1"x4"x8", 300gram, 60, 12MB, 40bogomips, linux, mutt, details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html.
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