Messages in this thread | | | Subject | Re: [RFC PATCH RT] rwsem: The return of multi-reader PI rwsems | From | Mike Galbraith <> | Date | Thu, 10 Apr 2014 16:28:43 +0200 |
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On Thu, 2014-04-10 at 16:18 +0200, Mike Galbraith wrote: > On Wed, 2014-04-09 at 15:19 -0400, Steven Rostedt wrote: > > > If you have any benchmark on large machines I would be very happy if > > you could test this patch against the unpatched version of -rt. > > Too bad I don't have (and know how to use) specjbb. > > I dug up old vmark, thinking I'd be able to get some halfway useful > relative numbers from it, but that was a waste of a day. The thing > performs so badly on 40 core box that rt _beats_ nopreempt, and after 2 > nodes, you're going backward. 40 Westmere EX cores does a whopping ~2.5 > * dinky old Q6600 box throughput.
P.S. What I didn't see was any sign of a delta patched/unpatched.. which may mean nothing at all :-/
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