On Wed, Jan 26 2005, Jens Axboe wrote: > On Wed, Jan 26 2005, Andrew Morton wrote: > > Jens Axboe <[EMAIL PROTECTED]> wrote: > > > > > > On Wed, Jan 26 2005, Andrew Morton wrote: > > > > Jens Axboe <[EMAIL PROTECTED]> 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: > > [EMAIL PROTECTED]:/home/axboe $ free > total used free shared buffers cached > Mem: 1024992 1015288 9704 0 76680 328148 > -/+ buffers/cache: 610460 414532 > Swap: 0 0 0 > > [EMAIL PROTECTED]:/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 [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
