lkml.org 
[lkml]   [2020]   [Jan]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [Patch v2] scsi: storvsc: Correctly set number of hardware queues for IDE disk
From
Date

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

\
 
 \ /
  Last update: 2020-01-16 05:03    [W:0.054 / U:0.292 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site