Still using the v3.9~rc2-raring kernel, I noticed today that upon
launching a Google hangout, kswapd0 popped up in top chewing up a lot of
CPU. *however*, unlike with the 3.8 kernel from raring, the system
*actually swapped things out* to free up more memory:
$ free
total used free shared buffers cached
Mem: 3842060 3713168 128892 0 1096 885656
-/+ buffers/cache: 2826416 1015644
Swap: 6291452 1418152 4873300
$
With the previous kernel, no matter how bad the swap storm became, the
"cached" figure would never drop below 1.0GB.
So I think this bug is fixed in mainline, and would appreciate help
tracking down the fix so we can make sure it's addressed for raring.
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https://bugs.launchpad.net/bugs/1152736
Title:
system swapping itself to death in raring for no good reason
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