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Re: [PLUG] purposly emptying the file cache?
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On Thu, Jul 19, 2001 at 04:34:24PM -0400, gabriel rosenkoetter wrote:
> How 'bout just reading sizeof(<buffer cache>) of garbage? (/dev/zero
> might be useful to you... or /dev/urandom for that matter.)
Ahem. But not directly, since reading from them doesn't actually
involve any file system data structures. (Which is why, btw, you can
write to a device even if the file system is mounted ro.)
Dump the right number of bytes out of either into a file and read
that, though, and you're good. (You've of course got a lot of spare
disk on your benchmarking machine, right? ;^>)
--
~ g r @ eclipsed.net
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