[systemd-devel] kdbus performance regression by ~70% on 3.15 kernels ?

Daniel Mack daniel at zonque.org
Fri Jun 27 04:04:00 PDT 2014


On 06/27/2014 12:51 PM, Djalal Harouni wrote:
> Just to let you know that I did notice a regression by ~70% when running
> test-kdbus-benchmark on a kvm guest (that's what I've under hands now)
> 
> I know sorry, but still a kdbus on kvm is a valid case, I don't know if
> this affects real machine or only kvm guests will be able to confirm it
> next week unless someone do!
> 
> If you are able to test it in a real machine and confirm that it affects
> them too, thank you!
> I've managed to bisect this to:
> 3.15.0-rc1 good
> 3.15.0-rc5 bad
> 
> I Will continue later this day!

Please do. I'm not currently aware of such a regression. What about
3.16-rc2?


Thanks,
Daniel



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