Messages in this thread | | | Date | Thu, 12 Mar 2009 13:01:49 +0100 | Subject | Re: Memory usage per memory zone | From | jack marrow <> |
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2009/3/12 Wu Fengguang <fengguang.wu@intel.com>: > On Thu, Mar 12, 2009 at 01:38:46PM +0200, jack marrow wrote: >> > Can you paste the /proc/meminfo after doing 'echo 3 > drop_caches'? >> >> http://pastebin.com/mce24730 >> >> >> I thought the kernel dropped caches if a program needs the ram? >> > >> > Sure, but something is unreclaimable... Maybe some process is taking a >> > lot of shared memory(shm)? What's the output of `lsof`? >> >> I can't paste that, but I expect oracle is using it. > > Oh well... > > But from the meminfo, there are 1.2G mapped pages. That could be a big > trouble for reclaiming. Recent kernels can better handle this situation. > > Thanks, > Fengguang > --- > > # cat /proc/meminfo > MemTotal: 3895404 kB > MemFree: 2472656 kB > Buffers: 412 kB > Cached: 239716 kB > SwapCached: 202652 kB > Active: 1275212 kB > Inactive: 34584 kB > HighTotal: 3014592 kB > HighFree: 1684032 kB > LowTotal: 880812 kB > LowFree: 788624 kB > SwapTotal: 2040212 kB > SwapFree: 1626756 kB > Dirty: 104 kB > Writeback: 0 kB > Mapped: 1247000 kB > Slab: 80040 kB > CommitLimit: 3987912 kB > Committed_AS: 8189040 kB > PageTables: 18792 kB > VmallocTotal: 106488 kB > VmallocUsed: 3072 kB > VmallocChunk: 102980 kB > HugePages_Total: 0 > HugePages_Free: 0 > Hugepagesize: 2048 kB >
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