Messages in this thread | | | Date | Mon, 7 Feb 2005 07:38:12 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: Memory leak in 2.6.11-rc1? |
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On Mon, 7 Feb 2005, Jan Kasprzak wrote: > >The server has been running 2.6.11-rc2 + patch to fs/pipe.c >for last 8 days. > > # cat /proc/meminfo > MemTotal: 4045168 kB > Cached: 2861648 kB > LowFree: 59396 kB > Mapped: 206540 kB > Slab: 861176 kB
Ok, pretty much everything there and accounted for: you've got 4GB of memory, and it's pretty much all in cached/mapped/slab. So if something is leaking, it's in one of those three.
And I think I see which one it is:
> # cat /proc/slabinfo > slabinfo - version: 2.1 > # name <active_objs> <num_objs> <objsize> <objperslab> <pagesperslab> : tunables <batchcount> <limit> <sharedfactor> : slabdata <active_slabs> <num_slabs> <sharedavail> > biovec-1 5506200 5506200 16 225 1 : tunables 120 60 8 : slabdata 24472 24472 240 > bio 5506189 5506189 128 31 1 : tunables 120 60 8 : slabdata 177619 177619 180
Whee. You've got 5 _million_ bio's "active". Which account for about 750MB of your 860MB of slab usage.
Jens, any ideas? Doesn't look like the "md sync_page_io bio leak", since that would just lose one bio per md suprt block read according to you (and that's the only one I can find fixed since -rc2). I doubt Jan has caused five million of those..
Jan - can you give Jens a bit of an idea of what drivers and/or schedulers you're using?
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