I've started seeing this problem with the most recent kernel(3.8.0-19),
even when swap is turned off.
For example, when resuming from suspend, kwapd0 will start using 99-100%
if CPU according to top, even though the reported swap usage is 0.
running swapoff -a has no effect, and the only way to stop kswapd0 from
consuming all CPU is to close any process that is currently using a lot
of RAM (for example Firefox).
It is currently so bad that at times the entire computer is unusable as
kswapd0 is thrashing the disk, blocking all other IO (shell, TTY, UI)and
I am currently investigating ways to physically prevent the process from
ever starting.
** Changed in: linux (Ubuntu)
Status: Expired => Confirmed
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1055534
Title:
[regression] since linux 3.4.0, kswapd0 uses 100% cpu when low memory
is available
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1055534/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
