On Wed, 2011-06-15 at 09:18 -0700, Andi Kleen wrote: > And in general it looks like blind conversion from spinlock to mutex > is a bad idea right now. For 4 socket machines, maybe. On 2 sockets I cannot reproduce anything. I wonder if its the fairness thing, the mutex spinners aren't fifo fair like the ticket locks are. It could be significant with larger socket count since their cacheline arbitration is more sucky. -- 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 internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>