On Wed, 11 Jan 2012, John Stoffel wrote: > 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. The assumptions by Kosaki are quite conservative. What if one did not get a disk from the garbage heap but instead has a state of the art storage cluster or simply an SSD (in particular relevant now since HDs are in short supply given the situation in Asia)? -- 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>