Re: Fio 2.1.14 released

[Jens Axboe <axboe@kernel.dk>]

On 11/12/2014 02:36 PM, Matthew Eaton wrote:
>> It should all be as fast as it could be before. The issue fixed above is
>> when we wanted the disk util thread to exit, we set a done flag and just
>> waited for it to wakeup as, which it did a few times per second. Now we use
>> regular condvars, so it'll wake and exit immediately. So disk_util=0 should
>> not change more than a msec or so :-)
>>
>> That said, if you do find things where it seems to start or stop slower than
>> it should, let me know. But as far as I know, it's all properly driven now.
>>
>> --
>> Jens Axboe
>>
> 
> Thanks!  Just to follow up, I wrote a test script looping 20
> iterations of fio and tested 2.1.12 vs 2.1.14.
> 
> 2.1.14 consistently finished ~2.7 seconds faster than 2.1.12, which I
> think is great for only 20 iterations.

That sounds reasonable. That's 135msec per iteration, which is roughly
what we'd expect the average wait time to be (250msec / 2).



-- 
Jens Axboe