In Red Hat internal storage test wrt. blk-mq scheduler, we
found that its performance is quite bad, especially
about sequential I/O on some multi-queue SCSI devcies.
Turns out one big issue causes the performance regression: requests
are still dequeued from sw queue/scheduler queue even when
In Red Hat internal storage test wrt. blk-mq scheduler, we
found that its performance is quite bad, especially
about sequential I/O on some multi-queue SCSI devcies.
Turns out one big issue causes the performance regression: requests
are still dequeued from sw queue/scheduler queue even when
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