On Wed, Aug 17, 2022, at 2:15 PM, Jan Kara wrote: > OK, if this indeed passes then b6e68ee82585 ("blk-mq: Improve performance > of non-mq IO schedulers with multiple HW queues") might be what's causing > issues (although I don't know how yet...). I can revert it from 5.12.0 and try. Let me know which next test is preferred :) -- Chris Murphy