Messages in this thread | | | Date | Wed, 20 Aug 2003 17:49:49 +0100 | From | Luciano Miguel Ferreira Rocha <> | Subject | Re: how to turn off, or to clear read cache? |
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On Wed, Aug 20, 2003 at 03:31:32PM +0200, Måns Rullgård wrote: > Sergey Spiridonov <spiridonov@gamic.com> writes: > > >>> I need to make some performance tests. I need to switch off or to > >>> clear read cache, so that consequent reading of the same file will > >>> take the same amount of time. > >>> > >>>Is there an easy way to do it, without rebuilding the kernel? > >> Unmount and remount the filesystem. > > > > > > Would > > > > # mount -o remount > > > > do the job? > > no
What about dd if=/dev/hda bs=8M count=$(awk '/MemTotal/ { printf "%d", $2/4096 }' /proc/meminfo) ?
Will it clear the cache?
Regards, Luciano Rocha - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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