[PATCH 1/4] nvme-tcp: per-controller I/O workqueues

[Hannes Reinecke]

On 7/5/24 09:10, Christoph Hellwig wrote:
> Btw, I don't think brd is what we should optimize for.  brd does
> synchronous I/O from ->submit_bio which makes it very non-typical.
> Trying to get this as good as possible for QD=1 might be fine,
> but once we have deeper queue depth and/or bigger I/O size it will
> use a lot more time in the submission context (aka the workqueues here)
> than a real device.
> 
Hmm. brd was the simplest choice to get a high-bandwidth target.
I'll check if a get a similar performance with null-blk.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                  Kernel Storage Architect
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