On Tue, 2013-07-09 at 10:30 +0800, Michael Wang wrote: > Hi, Davidlohr > > Thanks for the testing :) > > On 07/09/2013 02:59 AM, Davidlohr Bueso wrote: > [snip] > >> > >> OK, I'll apply the patches, we'll see what happens. If there significant > >> fallout we'll immediately have more information anyway ;-) > > > > So I gave the v2 a spin on my aim7 benchmark on an 80-core 8 socket > > DL980. Not much changed, most numbers are in the noise range, however, > > with HT off, the high_systime workload suffered in throughput with this > > patch with higher concurrency (after 600 users). Image attached. > > To make sure I'm not on the wrong way... HT here means hyperthreading, > correct?
Yep :) > > I have some questions like: > 1. how do you disable the hyperthreading? by manual or some other way? Manually, from the BIOS. > 2. is the 3.10-rc5 in image also disabled the hyperthreading? Yes, I happened to have data already collected for 3.10-rc5. While the runs with this patch was with -rc7, unless there was some performance related commit I missed, I don't think the performance difference was because of that. > 3. is the v3 patch set show the same issue? Uhmmm shoot, I didn't realize there was a v3, sorry about that. /me takes another look at the thread. Thanks, Davidlohr -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
