[nova] iothread support with Libvirt

Eric K. Miller emiller at genesishosting.com
Wed Jan 12 21:10:11 UTC 2022

> It appears that the "noop" scheduler merges requests, so you are likely
> getting between 3 and 4 I/O command merges per command to go from 4800
> to 17800 IOPS.  I'll have to check on this to see if that changes anything on this
> end, since I thought that the default scheduler also performed command
> merging.

It appears that "deadline" is the only scheduler available in later kernel versions (at least in Ubuntu).

Damian - do you recall what the scheduler was set to prior to changing it to the noop scheduler?


More information about the openstack-discuss mailing list