On 12/04/14 17:47, Shirley Ma wrote:
What's the history of this patch?
http://lists.openfabrics.org/pipermail/general/2008-May/050813.html
I am working on multiple QPs workload. And I created a similar approach
> with IB_CQ_VECTOR_LEAST_ATTACHED, which can bring up about 17% small I/O
> performance. I think this CQ_VECTOR loading balance should be maintained
> in provider not the caller. I didn't see this patch was submitted to
> mainline kernel, wonder any reason behind?
My interpretation is that an approach similar to
IB_CQ_VECTOR_LEAST_ATTACHED is useful on single-socket systems but
suboptimal on multi-socket systems. Hence the code for associating CQ
sets with CPU sockets in the SRP initiator. These changes have been
queued for kernel 3.19. See also branch drivers-for-3.19 in git repo
git://git.infradead.org/users/hch/scsi-queue.git.
Bart.
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