On Wed, 17 Nov 2010 12:27:26 +0800 Wu Fengguang <fengguang.wu@xxxxxxxxx> wrote: > + w = min(elapsed / (HZ/100), 128UL); I did try setting HZ=10 many years ago, and the kernel blew up. I do recall hearing of people who set HZ very low, perhaps because their huge machines were seeing performance prolems when the timer tick went off. Probably there's no need to do that any more. But still, we shouldn't hard-wire the (HZ >= 100) assumption if we don't absolutely need to, and I don't think it is absolutely needed here. -- 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>