Wednesday 03 October 2007, Alexandros K-K wrote:
| what's the drop-all-cache command?
sorry, that's a script of mine to tell the kernel to clean up a
little... i think it is already mentioned in this thread. basicly the
following:
#! /bin/sh
. /etc/rc.d/functions
IFS=$'\n'
stat_busy "Dropping Caches"
# here be some checking if any cp, mv, dd are running
sync && echo 3 > /proc/sys/vm/drop_caches
stat_done
| my results on ext3, with no pacman-optimize for a month, but
| updating the package db every day, went from 29 seconds to 800
| milliseconds. that seems waaay too much improvement, maybe the
| result got cached? how do i drop it?
with this command:
sync && echo 3 > /proc/sys/vm/drop_caches
it will sync and then tell the kernel to drop caches if possible.
if you want to just drop the pagecache, send a "1", if you want to
drop dentries and inodes, send "2" - "3" drops all of them
- D
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