Messages in this thread | | | Date | Fri, 18 Feb 2022 23:37:03 -0800 | From | Christoph Hellwig <> | Subject | Re: [PATCH RFC v1 0/5] Add SCSI per device tagsets |
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On Fri, Feb 18, 2022 at 06:41:52PM +0000, Melanie Plageman (Microsoft) wrote: > Currently a single blk_mq_tag_set is associated with a Scsi_Host. When SCSI > controllers are limited, attaching multiple devices to the same controller is > required. In cloud environments with relatively high latency persistent storage, > requiring all devices on a controller to share a single blk_mq_tag_set > negatively impacts performance.
So add more controllers instead of completely breaking the architecture.
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