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From: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
To: paolo.valente@linaro.org
Cc: linux-block@vger.kernel.org, Ben Hutchings <ben@decadent.org.uk>
Subject: Re: blk-mq 5-8 times slower for bmap-tools
Date: Fri, 17 Aug 2018 19:52:41 +0200	[thread overview]
Message-ID: <CAPybu_20-bSH5aw5L0mrmLRTD3Q02Sj0yez5LxJ1YHcDAZeoBg@mail.gmail.com> (raw)
In-Reply-To: <82A59CD0-9B59-4F5B-BE9B-BCDD3FDCA177@linaro.org>

Hi Paolo

On Fri, Aug 17, 2018 at 7:42 PM Paolo Valente <paolo.valente@linaro.org> wrote:

>
> Try bfq too, as it is probably the one containing also the most old
> way heuristics.  If bfq fails too, we will at least know that the issue
> is out of the schedulers. Or in every scheduler! :)

I believe that for this specific setup: A disk reader with a cfast via
USB3, the best approach might be to have a single queue and respect
the tool sequence. But definitely the io layer is out of my expertise
;)

Monday morning will performe the tests.

Thanks again and best regards!


-- 
Ricardo Ribalda

  reply	other threads:[~2018-08-17 20:57 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-17 17:31 blk-mq 5-8 times slower for bmap-tools Ricardo Ribalda Delgado
2018-08-17 17:35 ` Paolo Valente
2018-08-17 17:39   ` Ricardo Ribalda Delgado
2018-08-17 17:41     ` Jens Axboe
2018-08-17 17:49       ` Ricardo Ribalda Delgado
2018-08-17 21:23         ` Jens Axboe
2018-08-17 17:42     ` Paolo Valente
2018-08-17 17:52       ` Ricardo Ribalda Delgado [this message]
2018-08-17 23:43 ` Ming Lei
     [not found]   ` <CAPybu_2ke4usj9Qwr9iSKTymAk1510pzZnZAgLemRB+cK4Se1A@mail.gmail.com>
2018-08-20  8:30     ` Ming Lei
2018-08-20  9:04       ` Ricardo Ribalda Delgado
2018-08-20  9:55         ` Ming Lei
2018-08-20  9:56           ` Ricardo Ribalda Delgado
2018-08-20 10:15             ` Ming Lei
2018-08-20 11:42               ` Ming Lei
2018-08-20 11:45                 ` Ming Lei
2018-08-22 19:22         ` Ben Hutchings
2018-08-22 22:02           ` Ming Lei
2018-08-23  0:51             ` Ben Hutchings
2018-08-23  2:17               ` Ming Lei
2018-08-23  6:29           ` Ricardo Ribalda Delgado

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