Re: Memory leak in 2.6.11-rc1?

[Jens Axboe]

On Wed, Jan 26 2005, Andrew Morton wrote:
> Jens Axboe <axboe@xxxxxxx> wrote:
> >
> > This is my current situtation:
> > 
> > ...
> >  axboe@wiggum:/home/axboe $ cat /proc/meminfo 
> >  MemTotal:      1024992 kB
> >  MemFree:          9768 kB
> >  Buffers:         76664 kB
> >  Cached:         328024 kB
> >  SwapCached:          0 kB
> >  Active:         534956 kB
> >  Inactive:       224060 kB
> >  HighTotal:           0 kB
> >  HighFree:            0 kB
> >  LowTotal:      1024992 kB
> >  LowFree:          9768 kB
> >  SwapTotal:           0 kB
> >  SwapFree:            0 kB
> >  Dirty:            1400 kB
> >  Writeback:           0 kB
> >  Mapped:         464232 kB
> >  Slab:           225864 kB
> >  CommitLimit:    512496 kB
> >  Committed_AS:   773844 kB
> >  PageTables:       8004 kB
> >  VmallocTotal: 34359738367 kB
> >  VmallocUsed:       644 kB
> >  VmallocChunk: 34359737167 kB
> >  HugePages_Total:     0
> >  HugePages_Free:      0
> >  Hugepagesize:     2048 kB
> 
> OK.  There's rather a lot of anonymous memory there - 700M on the LRU, 300M
> pageache, 400M anon, 200M of slab.  You need some swapspace ;)

Just forget to swapon again after the recent fillmem cleanup, I do have
1G of swap usually on as well!

> What are the symptoms?  Slow to load applications?  Lots of paging?  Poor
> I/O speeds?

No paging, it basically never hits swap. Buffered io by itself seems to
run at full speed. But application startup seems sluggish. Hard to
explain really, but there's a noticable difference to the feel of usage
when it has just been force-pruned with fillmem and before.

-- 
Jens Axboe

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