Here you can find attached the script, collecting the logs and the logs themselves during the described process of freezing. It appeared that the previous logs are corrupted, because both /proc/vmstat and /proc/meminfo have been logging to the same file. -- On 05/04/13 13:59, Michal Hocko wrote: > On Fri 05-04-13 12:13:11, Ivan Danov wrote: >> Tried with vm.swappiness=60, but the only improvement is that now >> the mouse input is less choppy than before, but still the problem >> remains - the computer is not usable at all, one could not even stop >> the program, causing the problem. > OK, could you collect /proc/vmstat and /proc/meminfo during that load? > >> Best, >> Ivan >> -- >> On 04/04/13 17:16, Michal Hocko wrote: >>> On Thu 04-04-13 16:10:06, Ivan Danov wrote: >>>> Hi Michal, >>>> >>>> Yes, I use swap partition (2GB), but I have applied some things for >>>> keeping the life of the SSD hard drive longer. All the things I have >>>> done are under point 3. at >>>> http://www.rileybrandt.com/2012/11/18/linux-ultrabook/. >>> OK, I guess I know what's going on here. >>> So you did set vm.swappiness=0 which (for some time) means that there is >>> almost no swapping going on (although you have plenty of swap as you are >>> mentioning above). >>> This shouldn't be a big deal normally but you are also backing your >>> /tmp on tmpfs which is in-memory filesystem. This means that if you >>> are writing to /tmp a lot then this content will fill up your memory >>> which is not swapped out until the memory reclaim is getting into real >>> troubles - most of the page cache is dropped by that time so your system >>> starts trashing. >>> >>> I would encourage you to set swappiness to a more reasonable value (I >>> would use the default value which is 60). I understand that you are >>> concerned about your SSD lifetime but your user experience sounds like a >>> bigger priority ;) >>> >>>> By system freezes, I mean that the desktop environment doesn't react >>>> on my input. Just sometimes the mouse is reacting very very choppy >>>> and slowly, but most of the times it is not reacting at all. In the >>>> attached file, I have the output of the script and the content of >>>> dmesg for all levels from warn to emerg, as well as my kernel config. >>> I haven't checked your attached data but you should get an overview from >>> Shmem line from /proc/meminfo which tells you how much shmem/tmpfs >>> memory you are using and grep "^Swap" /proc/meminfo will tell you more >>> about your swap usage. >>> >>>> Best, >>>> Ivan >>> HTH
** Attachment added: "bug-with-swappiness.tar.gz" https://bugs.launchpad.net/bugs/1162073/+attachment/3624404/+files/bug-with-swappiness.tar.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1162073 Title: System freeze on high memory usage To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1162073/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
