Re: inode cache, dentry cache, buffer heads usage

From: Badari Pulavarty
Date: Mon Mar 14 2005 - 16:39:50 EST


On Thu, 2005-03-10 at 17:47, Andrew Morton wrote:
> Badari Pulavarty <pbadari@xxxxxxxxxx> wrote:
> >
> > So, why is these slab cache are not getting purged/shrinked even
> > under memory pressure ? (I have seen lowmem as low as 6MB). What
> > can I do to keep the machine healthy ?
>
> Tried increasing /proc/sys/vm/vfs_cache_pressure? (That might not be in
> 2.6.8 though).
>
>

Yep. This helped shrink the slabs, but we end up eating up lots of
the lowmem in Buffers. Is there a way to shrink buffers ?

$ cat /proc/meminfo
MemTotal: 16377076 kB
MemFree: 7495824 kB
Buffers: 1081708 kB
Cached: 4162492 kB
SwapCached: 0 kB
Active: 3660756 kB
Inactive: 4473476 kB
HighTotal: 14548952 kB
HighFree: 7489600 kB
LowTotal: 1828124 kB
LowFree: 6224 kB



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