On Wed, Apr 29 2015, Zhang Zhen <zhenzhang.zhang@xxxxxxxxxx> wrote: > Hi, > > Our x86 system has crashed because oom. > We found task_struct slabs ate much memory. I can't explain what you've seen, but a simple way to reduce the memory footprint of struct task_struct is CONFIG_LATENCYTOP=n That will reduce sizeof(struct task_struct) by ~3840 bytes (60%, give or take). Rasmus > CACHE NAME OBJSIZE ALLOCATED TOTAL SLABS SSIZE //**Slabs is much larger than alloctated object counts** > ffff88081e007500 task_struct 6528 4639 229775 45955 32k -- 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>