On Wed, Jun 15, 2011 at 02:05:46PM -0700, Linus Torvalds wrote: > > > Ingo Molnar <mingo@xxxxxxx> wrote: > > > >I have this fix queued up currently: > > > > 09223371deac: rcu: Use softirq to address performance regression > > I really don't think that is even close to enough. > > It still does all the callbacks in the threads, and according to Peter, about half the rcu time in the threads remained.. I am putting together a patch that gets rid of the kthreads in the !RCU_BOOST case. The time will still be consumed, but in softirq context, though of course with many fewer context switches. Thanx, Paul -- 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>