Re: [PATCH 1/9] move blk_iopoll to limit and make it generally available

From: Or Gerlitz
Date: Sun Nov 15 2015 - 04:04:27 EST

On Sun, Nov 15, 2015 at 10:48 AM, Sagi Grimberg
<sagig@xxxxxxxxxxxxxxxxxx> wrote:
> Or is correct,
> I have attempted to convert iser to use blk_iopoll in the past, however
> I've seen inconsistent performance and latency skews (comparing to
> tasklets iser is using today). This was manifested in IOPs test cases
> where I ran multiple threads with higher queue-depth and not in
> sanitized pure latency (QD=1) test cases. Unfortunately I didn't have
> the time to pick it up since.
> I do have every intention of testing it again with this. If it still
> exist we will need to find the root-cause of it before converting
> drivers to use it.

Good, this way (inconsistent performance and latency skews) or another
(all shines up) -- please
let us know your findings, best through commenting within V > 0 the
cover letter posts of this series
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