This is a NUMA system right? Then we have another mechanism that will avoid off node memory references by allocating new slabs. Can you set the node_defrag parameter to 0? (Noted by Adrian). -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html