Hi John, On Mon, Mar 28, 2011 at 10:50:56PM +0400, John Lepikhin wrote: > 2011/3/28 Jeffrey Hundstad <jeffrey.hundstad@xxxxxxxx>: > > > I'd take a look here: > > http://www.linuxinsight.com/proc_sys_vm_hierarchy.html > > Yes, I already played with dirty_*, min_free_kbytes (3000kb), > swappiness (0..100), vfs_cache_pressure (1..200) and zone_reclaim_mode > (currently 0). Other parameters are set to defaults. > > By the way, there is no swap enabled. Instead of just dropping 50% of > page caches, kernel was intensively swapping then there was a swap > device. Is your memory usage balanced across the nodes? You can check it via /sys/devices/system/node/node*/meminfo. Are there lots of high-order memory allocations? /proc/buddyinfo will disclose some of them. Thanks, Fengguang -- 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
