On Mon, 17 Dec 2007 14:17:26 +0100
Lukas Hejtmanek <[email protected]> wrote:
> Hello,
>
> does /proc/sys/vm/swappiness still work as expected?
> # /proc/sys/vm# cat swappiness
> 0
>
> but scp-ing 2GB file causes many processes are swapped out due to increase of
> the file cache size. Why? This is totally catastrophic behaviour on the desktop.
>
Hmm, which version of the kernel do you compare with ?
Seems following patch is the newest one, which changes meaning of swappiness.
Now the swap happens even if swappiness=0, when the system memory usage is highly
unbalanced or when memory reclaim doesn't make progress.
=
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=4106f83a9f86afc423557d0d92ebf4b3f36728c1
=
> Is there a way to avoid it except turning off the swap?
>
Maybe...no.
(*) I'm now working on memory resource controller in -mm kernel. please see/try
and comments if interested.
Thanks,
-Kame
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