On Tue, Oct 06 2009, Peter Zijlstra wrote: > On Tue, 2009-10-06 at 12:26 +0200, Jens Axboe wrote: > > > I did a quick perf analysis on that, but only on 8 clients (64 clients > > basically causes perf to shit itself, it's just not functional). > > Even when used with -a so that you profile each cpu? I can imagine the > cacheline contention from the inherited counters to render a 64 thread > machine less than usable? No, that's without -a. I used -a for perf top, and that has some impact on performance while it's running, but millions of miles apart from what it does without it :-) -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
