Messages in this thread | | | Date | Mon, 26 Jul 2004 22:02:04 +0200 | From | (Klaus Dittrich) | Subject | Re: dentry cache leak? Re: rsync out of memory 2.6.8-rc2 |
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Andrew Morton wrote:
>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. > > >
cat /proc/sys/vm/vfs_cache_pressure shows 100. Should I try an older or newer compiler ?
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