On Fri, 2005-08-26 at 08:43 +0200, Thomas Gleixner wrote: > On Thu, 2005-08-25 at 18:15 -0700, Daniel Walker wrote: > > On Fri, 2005-08-26 at 02:22 +0200, Thomas Gleixner wrote: > > > On Thu, 2005-08-25 at 16:29 -0700, Daniel Walker wrote: > > > > Devastating latency on a 3Ghz xeon .. Maybe the raw_spinlock in the > > > > timer base is creating a unbounded latency? > > > > > > The lock is only held for really short periods. The only possible long > > > period would be migration of timers from a dead hotplug cpu to another. > > > I guess thats not the case. > > > > > > Do you have HIGH_RES_TIMERS enabled ? > > > > No. The cascade has a very long worst case. > > You mean the cascading from the outer to the inner wheels ? That should > only happen with tons of active timers.
Right .. Daniel - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
