I'm sorry Christopher, I downgraded to Debian Stable on my production
servers and not experiencing any more problems.





2012/10/17 Christopher M. Penalver <email address hidden>

> Arkadiy Kulev, thank you for taking the time to report this bug and
> helping to make Ubuntu better. Please execute the following command, as it
> will automatically gather debugging information, in a terminal:
> apport-collect 721896
> When reporting bugs in the future please use apport by using 'ubuntu-bug'
> and the name of the package affected. You can learn more about this
> functionality at https://wiki.ubuntu.com/ReportingBugs.
>
> As well, could you please test the latest upstream kernel available
> following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow
> additional upstream developers to examine the issue. Please do not test the
> kernel in the daily folder, but the one all the way at the bottom. Once
> you've tested the upstream kernel, please comment on which kernel version
> specifically you tested and remove the tag:
> needs-upstream-testing
>
> This can be done by clicking on the yellow pencil icon next to the tag
> located at the bottom of the bug description and deleting the text:
> needs-upstream-testing
>
> If this bug is fixed in the mainline kernel, please add the following tags:
> kernel-fixed-upstream
> kernel-fixed-upstream-VERSION-NUMBER
>
> where VERSION-NUMBER is the version number of the kernel you tested.
>
> If the mainline kernel does not fix this bug, please add the following
> tags:
> kernel-bug-exists-upstream
> kernel-bug-exists-upstream-VERSION-NUMBER
>
> If you are unable to test the mainline kernel, please comment as to why
> specifically you were unable to test it and add the following tags:
> kernel-unable-to-test-upstream
> kernel-unable-to-test-upstream-VERSION-NUMBER
>
> Please let us know your results. Thank you for your understanding.
>
> ** Tags added: needs-kernel-logs needs-upstream-testing
>
> ** Attachment removed: "Output of 'top -i' in an interval of about 11
> seconds, showing kswapd0 idle process and high I/O Wait"
>
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/721896/+attachment/1872267/+files/top-monitor.txt
>
> ** Attachment removed: "[Log] Output of 'top -i' in an interval of about
> 11 seconds, showing kswapd0 idle process and high I/O Wait"
>
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/721896/+attachment/1872280/+files/top-monitor_lp-2011-02-26.log
>
> ** Package changed: centos => linux
>
> ** Changed in: linux (Ubuntu)
>        Status: Confirmed => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/721896
>
> Title:
>   kswapd0 100% cpu usage
>
> Status in The Linux Kernel:
>   New
> Status in “linux” package in Ubuntu:
>   Incomplete
>
> 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.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/linux/+bug/721896/+subscriptions
>



-- 
Sincerely,
Arkadiy Kulev.
+7 495 5070602 - Moscow, Russia.