Messages in this thread | | | Date | Thu, 12 Mar 2009 19:51:47 +0800 | From | Wu Fengguang <> | Subject | Re: Memory usage per memory zone |
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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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