It's strongly advised to report the exact kernel version along with a problem report. It's not unlikely your problem is specific to the kernel version, especially if you use an OpenVZ kernel from Debian Squeeze.
Roman On Tue, 2013-10-01 at 14:45 -0400, Mark J. wrote: > Hello, > > I have been trying to tweak the OOM killer to prevent some database > corruption thats been happening in the VM's when the oom killer kills off > mysql. Based on what i have read online and in the conf file itself I am a > bit confused on why its not killing other things off before mysql. > > Based on the following (taken directly form the conf file): > > OOM-score adjustment, a number from -1000 to 1000. A positive number > increases the chances of killing, while a negative number decreases it (more > protection). -1000 makes a process unkillable till any other process exists. > > I made the following changes to the conf file: > > mysqld init -500 -1000 > httpd init -500 100 > httpsd init -500 100 > apache init -500 100 > php init -500 100 > > > Saved and then made the changes live: > > cat /etc/vz/oom-groups.conf > /proc/vz/oom_score_adj > > > Verified the changes were in fact live: > > root ~ #cat /proc/vz/oom_score_adj | grep mysql > mysqld init -500 -1000 > root ~ #cat /proc/vz/oom_score_adj | grep http > httpd init -500 100 > httpsd init -500 100 > > > However I am still watching mysql get killed off before anything else: > > Oct 1 14:38:18 server kernel: [2456651.082410] >>> 3679 oom generation 62 > starts > Oct 1 14:38:18 server kernel: [2456651.082418] 133199 (mysqld) invoked loc > oom-killer: gfp 0x200da order 0 oomkilladj=0 > Oct 1 14:38:18 server kernel: [2456651.084483] Out of memory in UB: Kill > process 126607 (mysqld) score -903 or sacrifice child > Oct 1 14:38:18 server kernel: [2456651.084772] OOM killed process 126607 > (mysqld) vm:3829812kB, rss:166344kB, swap:36760kB > Oct 1 14:38:18 server kernel: [2456651.115460] OOM killed process mysqld > (pid=157305, ve=3679) exited, free=519316. > Oct 1 14:38:18 server kernel: [2456651.115465] <<< 3679 oom generation 62 > ends (task died) > > Anyone have any suggestions or been able to make these adjustments that > worked? Any help would be of great assistance. > _______________________________________________ > Users mailing list > Users@openvz.org > https://lists.openvz.org/mailman/listinfo/users _______________________________________________ Users mailing list Users@openvz.org https://lists.openvz.org/mailman/listinfo/users
