When OOM happen, will dump buddy free areas info, hugetlb pages info, memory state of all eligible tasks, per-cpu memory info. But do not dump slab/vmalloc info, sometime, it's not enough to figure out the reason OOM happened. So, my questions are: 1. Should dump slab/vmalloc info when OOM happen? Though we can get these from proc file, but usually we do not monitor the logs and check proc file immediately when OOM happened. 2. /proc/$pid/smaps and pagecache info also helpful when OOM, should also be dumped? 3. Without these info, usually how to figure out OOM reason? -- 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>