Messages in this thread | | | Subject | Re: [Patch v2] scsi: storvsc: Correctly set number of hardware queues for IDE disk | From | "Martin K. Petersen" <> | Date | Wed, 15 Jan 2020 23:03:05 -0500 |
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Long,
> Commit 0ed881027690 ("scsi: storvsc: setup 1:1 mapping between > hardware queue and CPU queue") introduced a regression for disks > attached to IDE. For these disks the host VSP only offers one VMBUS > channel. Setting multiple queues can overload the VMBUS channel and > result in performance drop for high queue depth workload on system > with large number of CPUs.
Applied to 5.5/scsi-fixes, thanks!
-- Martin K. Petersen Oracle Linux Engineering
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