Comment 26 for bug 1152736

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.