Messages in this thread | | | Date | Mon, 26 Jul 2004 12:37:02 -0700 | From | Andrew Morton <> | Subject | Re: dentry cache leak? Re: rsync out of memory 2.6.8-rc2 |
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kladit@t-online.de (Klaus Dittrich) wrote: > > >Can you narrow the onset of the problem down to any particular kernel > >snapshot? > > Did it and here is the answer. > > kernel-2.6.7 and bk's up to 2.6.7-bk7 survived a du -s, > kernels starting with 2.6.7-bk8 did not.
Dammit, -bk7 to -bk8 is a 1.8M diff. Relevant changes include the switch to the rcu callbacks (make them take an rcu_head* rather than a void*) and the introduction of /proc/sys/vm/vfs_cache_pressure.
So the immediate question is: please check the contents of your vfs_cache_pressure tunable. It should be 100. A setting of zero would cause this behaviour.
> > Compiler gcc-3.4.1
It would be useful to try a different compiler version.
There's _something_ different in your setup. If we can work out what this factor is, it will lead us to the bug.
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