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 > -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>