Messages in this thread | | | From | "Ricardo Galli" <> | Subject | RE: 2.4.1 eats RAM or /proc/meminfo bug | Date | Sat, 3 Feb 2001 19:27:54 +0100 |
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> you should give up thinking there's any real relation between 2.2 > and 2.4. yes, they're both Linux, but their behaviors are essentially > unrelated. > > > total used free shared buffers > cached > > Mem: 255340 232444 22896 0 16988 > 93212 > > -/+ buffers/cache: 122244 133096 > > Swap: 208804 0 208804 > > no swap in use, so there's no problem. except that 22MB is free/wasted.
Then, who is using those 122,244 KB of RAM than cannot be otherwise used for buffers/cache?
Perhaps I am wrong and that number is the sum of procs memory plus buffer/caches, but then it should have more free RAM than show in free/meminfo. And altough cache and buffers are more or less stable, the reported "used" memory" is still increasing.
What I understand is (no accounting for swap):
cache+buffers == active+inact_dirty+inact_clean. userland mem == total - (kernel + cache + buffers)
but my reported numbers don't match. I am doing against the maths with the current situation, and they still worse, buffers/cache have increased in ~4MB but free memory has decreased in ~14MB (with the same workload and processes):
[gallir@m3d gallir]$ free total used free shared buffers cached Mem: 255340 246816 8524 0 4048 110736 -/+ buffers/cache: 132032 123308 Swap: 208804 0 208804
It's preferable to use all available RAM for buffers/cache, but this isn't the case...
Sorry if I am wrong, I couldn't find more related docs about these changes.
--ricardo
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