>>>>> "KOSAKI" == KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxx> writes: >> Also, I doubt current swap_cluster default is best value on nowadays. KOSAKI> I meant, current average hdd spec is, KOSAKI> - average seek time: 8.5ms KOSAKI> - sequential access performance: about 60MB/sec KOSAKI> so, we can eat free lunch up to 7MB ~= 60(MB/sec) * 1000 / 8.5(ms). What if the disk is busy doing other writeout or readin during this time? You can't assume you have the full disk bandwidth available, esp when you hit a swap storm like this. John -- 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>