Could you share the exact commands to reproduce? I tried dd'ing to run out of memory on r2.micro (1GB memory). Please see the attached command logs. Is this comparable with your results?
What I find interesting is that on 15.04, it runs out of free memory and starts waiting for I/O (no noteworthy use of kswapd0), while on 15.10 it starts using kswapd0 up to 100%, even a while after the dd comand has completed. Could you compare this with your own results? Sergii/Sean: do you see the bug on any older kernel versions other than those who come with 15.10? ** Attachment added: "15.04-kswapd0.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1518457/+attachment/4547184/+files/15.04-kswapd0.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1518457 Title: kswapd0 100% CPU usage To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1518457/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
