Ingo Molnar wrote on Thursday, March 31, 2005 8:52 PM > the current defaults for cache_hot_time are 10 msec for NUMA domains, > and 2.5 msec for SMP domains. Clearly too low for CPUs with 9MB cache. > Are you increasing cache_hot_time in your experiment? If that solves > most of the problem that would be an easy thing to fix for 2.6.12.
Chen, Kenneth W wrote on Thursday, March 31, 2005 9:15 PM > Yes, we are increasing the number in our experiments. It's in the queue > and I should have a result soon. Hot of the press: bumping up cache_hot_time to 10ms on our db setup brings 2.6.11 performance on par with 2.6.9. Theory confirmed. - Ken - 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/