On Fri, 7 Jan 2011, Ying Han wrote: > On the other hand, having the low/high wmark consider more characters > other than the > size of the zone sounds useful. The semantics of any watermark is to trigger events to happen at a specific level, so they should be static with respect to a frame of reference (which in the VM case is the min watermark with respect to the size of the zone). If you're going to adjust the min watermark, it's then _mandatory_ to adjust the others to that frame of reference, you shouldn't need to tune them independently. The problem that Satoru is reporting probably has nothing to do with the watermarks themselves but probably requires more aggressive action by kswapd and/or memory compaction. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>