Hi!

> Le 17 sept. 2019 à 16:07, pslawek83 <pslawe...@o2.pl> a écrit :
> 
> Hi Everyone, just some quick follow up on this topic about MyRocks i started. 
> It seems that there are some issues with debian9 and cfq scheduler when using 
> rocks. Tested this on VM, not sure how virtualization is affecting this. 
> Rocks is easily able to saturate 3 cpu cores with I/O wait and I/O throughput 
> is very low in this config, even on fast SSD.
> 
> This gets much better after switching to noop/deadline and best is to switch 
> to Debian10 with mq-deadline. Then I/O wait drops to 0% and performance 
> improves a lot.

Just curious, is mq-deadline faster than none, even on fast SSD / NVME?

Thanks!
  Jocelyn


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