Re: sysbench throughput degradation in 4.13+

Christian Borntraeger
2017-09-28T09:11:16Z

On 09/27/2017 06:27 PM, Eric Farman wrote:
>
>
> On 09/27/2017 05:35 AM, Peter Zijlstra wrote:
>> On Fri, Sep 22, 2017 at 12:12:45PM -0400, Eric Farman wrote:
>>>
>>> MySQL. We've tried a few different configs with both test=oltp and
>>> test=threads, but both show the same behavior. What I have settled on for
>>> my repro is the following:
>>>
>>
>> Right, didn't even need to run it in a guest to observe a regression.
>>
>> So the below cures native sysbench and NAS bench for me, does it also
>> work for you virt thingy?
[...]

> --test=oltp
> Baseline: 5655.26 transactions/second
> Patched: 9618.13 transactions/second
>
> --test=threads
> Baseline: 25482.9 events/sec
> Patched: 29577.9 events/sec
>
> That's good! With that...
>
> Tested-by: Eric Farman <farman@linux.vnet.ibm.com>
>
> Thanks!
>
> - Eric

Assuming that we settle on this or Riks alternative patch.
Are we going to schedule this for 4.13 stable as well?