lkml.org 
[lkml]   [2014]   [Apr]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC PATCH RT] rwsem: The return of multi-reader PI rwsems
From
Date
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 :-/



\
 
 \ /
  Last update: 2014-04-10 19:21    [W:0.937 / U:0.060 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site