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On Wed, Jan 26 2005, Jens Axboe wrote: > On Wed, Jan 26 2005, Andrew Morton wrote:> > Jens Axboe <axboe@suse.de> wrote: > > >> > > On Wed, Jan 26 2005, Andrew Morton wrote:> > > > Jens Axboe <axboe@suse.de> wrote: > > > > >> > > > > But the 2.6.11-rcX vm is still very> > > > > screwy, to get something close to nice and smooth behaviour I have to > > > > > run a fillmem every now and then to reclaim used memory. > > > > > > > > Can you provide more details?> > > > > > Hmm not really, I just seem to have a very large piece of > > > non-cache/buffer memory that seems reluctant to shrink on light memory > > > pressure. > > > > If it's not pagecache then what is it? slab?> > Must be, if it's reclaimable.> > > > This makes the box feel sluggish, if I force reclaim by > > > running fillmem and swapping on/off again, it feels much better.> > > > before-n-after /proc/meminfo would be interesting.> > > > If you actually meant that is _is_ sticky pagecache then perhaps the recent > > mark_page_accessed() changes in filemap.c, although I'd be surprised.> > I don't think it's sticky page cache, it seems to shrink just fine. This > is my current situtation:> > axboe@wiggum:/home/axboe $ free> total used free shared buffers cached > Mem: 1024992 1015288 9704 0 76680 328148 > -/+ buffers/cache: 610460 414532 > Swap: 0 0 0 > > 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 The (by far) two largest slab consumers are: dentry_cache 140940 183060 216 18 1 : tunables 120 60 0 : slabdata 10170 10170 0 and ext3_inode_cache 185494 194265 776 5 1 : tunables 54 27 0 : slabdata 38853 38853 0 there are about ~40k buffer_head entries as well. -- Jens Axboe - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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