>OK, good to hear and fingers crossed. I will try to get back to the >original problem and a better solution sometimes early next year when >all the things settle a bit. Btw, i noticed one more thing when problem is happening (=when any cgroup is stucked), i fogot to mention it before, sorry :( . It's related to HDDs, something is slowing them down in a strange way. All services are working normally and i really cannot notice any slowness, the only thing which i noticed is affeceted is our backup software ( www.Bacula.org ). When problem occurs at night, so it's happening when backup is running, backup is extremely slow and usually don't finish until i kill processes inside affected cgroup (=until i resolve the problem). Backup software is NOT doing big HDD bandwidth BUT it's doing quite huge number of disk operations (it needs to stat every file and directory). I believe that only speed of disk operations are affected and are very slow. Merry christmas! -- 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>