On Tue, 8 May 2012, KOSAKI Motohiro wrote: > 4) Currently, vmstat have per-cpu batch and vmstat updating makes 3 > second delay at maximum. Nope. The delay is one second only and it is limited to a certain amount per cpu. There is a bound on the inaccuracy of the counter. If you want to have them more accurate then the right approach is to limit the threshhold. The more accurate the higher the impact of cache line bouncing. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>