From: Jens Axboe <axboe@kernel.dk>
To: Paolo Valente <paolo.valente@linaro.org>
Cc: linux-block <linux-block@vger.kernel.org>,
linux-kernel@vger.kernel.org, ulf.hansson@linaro.org,
broonie@kernel.org, lucmiccio@gmail.com
Subject: Re: [PATCH BUGFIX/IMPROVEMENT V2 0/2] block, bfq: improve and refactor throughput-boosting logic
Date: Fri, 11 Aug 2017 08:58:30 -0600 [thread overview]
Message-ID: <edf973bd-a99c-868e-4889-eea489dd975e@kernel.dk> (raw)
In-Reply-To: <66099037-D7F7-4803-B9A6-8A4866EAE43A@linaro.org>
On 08/10/2017 01:55 PM, Paolo Valente wrote:
>
>> Il giorno 04 ago 2017, alle ore 07:35, Paolo Valente <paolo.valente@linaro.org> ha scritto:
>>
>> Hi,
>> these two patches improve throughput-boosting logic in two
>> aspects. The first patch refactors the parts of the device-idling
>> logic, related to throughput boosting, that are still scattered across
>> the source file bfq-iosched.c. The patch concetrates all the logic in
>> one function. The second patch fixes/improves device idling for
>> flash-based devices that have no internal queueing of I/O requests.
>>
>> The contribution in the first patch has been triggered by that in the
>> second patch: finding the change made by the second patch has been
>> more difficult than it had to be, because the logic that decides
>> whether to idle the device is scattered across three functions.
>>
>> The second patch provides a significant throghput boost, for random
>> I/O with flash-based non-queueing devices. For example, on a HiKey
>> board, throughput increases by up to 125%, growing, e.g., from 6.9MB/s
>> to 15.6MB/s with two or three random readers in parallel.
>>
>
> Hi Jens,
> any idea about the fate of these two patches?
Queued up for 4.14.
--
Jens Axboe
prev parent reply other threads:[~2017-08-11 14:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-04 5:35 Paolo Valente
2017-08-04 5:35 ` [PATCH BUGFIX/IMPROVEMENT V2 1/2] block,bfq: refactor device-idling logic Paolo Valente
2017-08-04 5:35 ` [PATCH BUGFIX/IMPROVEMENT V2 2/2] block, bfq: boost throughput with flash-based non-queueing devices Paolo Valente
2017-08-10 19:55 ` [PATCH BUGFIX/IMPROVEMENT V2 0/2] block, bfq: improve and refactor throughput-boosting logic Paolo Valente
2017-08-11 14:58 ` Jens Axboe [this message]
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