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[Bug 721896] Re: kswapd0 100% cpu usage


Since Ubuntu 13.10 update, I have high cpu loads which eventually (after 5-10sec) lead to a blocked system.
Same reason: kswapd0 uses lots of CPU. Also seems mostly in conjunction with Chrome  when having many open tabs. Freeing memory by closing Chrome (or another heavy app) in time before the system becomes unresponsive helps, otherwise it crashes.

Freezes / crashes of this kind never happened before 13.10. though.
Maybe the new zswap feature could play a role?

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  kswapd0 100% cpu usage

Status in The Linux Kernel:
Status in “linux” package in Ubuntu:

Bug description:
  After the running the latest ubuntu for at least 2 weeks, I've noticed that kswapd0 started using 100% CPU on one of my cores.
  However, I have enough of RAM and not using swap (Swap: 11876344k total,    62336k used).

  The only thing I can do to remove the problem is reboot the system.
  I'm using Ubuntu 10.04.1 LTS server version without any kernel modifications.

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