Andi Kleen <[email protected]> wrote:
>
> On Tuesday 28 March 2006 05:00, Andrew Morton wrote:
> > Andi Kleen <[email protected]> wrote:
> > >
> > > On Monday 27 March 2006 13:48, Bharata B Rao wrote:
> > > > On Mon, Mar 27, 2006 at 07:50:20AM +0200, Andi Kleen wrote:
> > > > >
> > > > > A 2GB x86-64 desktop system here is currently swapping itself to death after
> > > > > a few days uptime.
> > > > >
> > > > > Some investigation shows this:
> > > > >
> > > > > inode_cache 1287 1337 568 7 1 : tunables 54 27 8 : slabdata 191 191 0
> > > > > dentry_cache 1867436 1867643 208 19 1 : tunables 120 60 8 : slabdata 98297 98297 0
> > > > >
> > > >
> > > > Would it be possible to try out this experimental patch which
> > > > gets some stats from the dentry cache ?
> > >
> > > It should be trivial to reproduce by other people. Biggest workload
> > > is kernel compiles and quilt.
> > >
> > > After a few hours with -git12 it's already at
> > >
> > > dentry_cache 947013 952014 208 19 1 : tunables 120 60 8 : slabdata 50100 50106 480
> > >
> > > and starting to go into swap.
> > >
> > > I can't imagine I'm the only one seeing this?
> > >
> > > I have a few x86-64 patches applied too, but they don't change anything
> > > in this area.
> >
> > I don't think I can reproduce this on x86 uniproc. (avtab_node_cache
> > is a different story - maintainers separately pinged).
>
>
> I got another OOM from this with -git13. Unfortunately it seems to take a few days at least
> to trigger.
>
> dentry_cache 999168 1024594 208 19 1 : tunables 120 60 8 : slabdata 53926 53926 0 : shrinker stat 18522624 8871000
>
> Hrm interesting is this one:
>
> sock_inode_cache 996784 996805 704 5 1 : tunables 54 27 8 : slabdata 199361 199361 0
>
> Most of the leaked dentries seem to be sockets. I didn't notice this earlier.
>
> This was with the debugging patches applied btw.
>
> So maybe we have a socket leak?
It looks that way. Didn't someone else report a sock_inode_cache leak?
> I still got a copy of the /proc in case anybody wants more information.
We have this fancy new /proc/slab_allocators now, it might show something
interesting. It needs CONFIG_DEBUG_SLAB_LEAK.
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