On Fri, 11 Apr 2014 14:47:49 +0200 Carsten Emde <C.Emde@xxxxxxxxx> wrote: > Hi Steven, > > > [..] I added Carsten to the Cc, so I'll post the entire change log > > of v1 here again. > I've been listening and testing boxes all the time ... > I figured but still wanted to add you to the Cc. > > [..] 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. > Three machines > - an X32 x86_64 (AMD Opteron 6272 @2100 MHz) at rack #1/slot #1, > - an X4x2 x86_64 (Intel i7-2600K @3400 MHz) at rack #4/slot #6, and > - an X4 ARM (i.MX6 Quad @996 MHz) at rack #8/slot #7 > are running a v3-patched 3.12.15-rt25 kernel now. I'll equip more > machines later. > > What I can say so far is: > - No evidence for any regression, no crashes That's good to hear. > - Performance certainly at least as good as unpatched, probably better That's even better. > > I'll do more tests and come back with more precise performance > comparison data. Do you also have any threaded tests? That is, something like a java benchmark that kicks off lots of threads. That's where the performance should show up the most. Clark's whack_mmap_sem test is specific to this, and has shown an 10x increase in performance with my patch. But that's a micro benchmark. A better test would be a real java application. Thanks, -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
