This is insidious. I was wondering where 500MB of my memory went, and
ps, top, etc, didn't report who stole it. I upgraded some packages to
make sure it wasn't a memory leak and rebooted.
Unfortunately the package upgrade either invalidated the ureadahead
pack, or reset it or something, because after a fresh reboot with just
GDM running, free looked like this:
total used free shared buffers cached
Mem: 2016984 761844 1255110 0 988 144416
-/+ buffers/cache: 607580 1409404
Swap: 2104472 0 2104472
Upgrading to Karmic proposed packages did *not* fix this. Rebooting
twice in a row without logging in, did. Now I guess Ubuntu is worse than
Windows in this respect, since it takes *two* consecutive reboots to fix
a problematic system instead of one. I'm tempted to just remove
ureadahead and call it a day.
--
ureadahead doesn't free memory after profile
https://bugs.launchpad.net/bugs/501715
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