From: Bart Van Assche <bvanassche@acm.org>
To: Christian Loehle <christian.loehle@arm.com>,
Qais Yousef <qyousef@layalina.io>
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
juri.lelli@redhat.com, mingo@redhat.com, rafael@kernel.org,
dietmar.eggemann@arm.com, vschneid@redhat.com,
vincent.guittot@linaro.org, Johannes.Thumshirn@wdc.com,
adrian.hunter@intel.com, ulf.hansson@linaro.org,
andres@anarazel.de, asml.silence@gmail.com,
linux-pm@vger.kernel.org, linux-block@vger.kernel.org,
io-uring@vger.kernel.org, linux-mmc@vger.kernel.org
Subject: Re: [RFC PATCH 0/2] Introduce per-task io utilization boost
Date: Mon, 25 Mar 2024 10:23:07 -0700 [thread overview]
Message-ID: <787fe4b7-a5af-4cd1-a7e8-8b9bad3be7d9@acm.org> (raw)
In-Reply-To: <de1eba3c-2453-4c5c-bd80-dd7d7b33f60d@arm.com>
On 3/25/24 05:06, Christian Loehle wrote:
> On 21/03/2024 19:52, Bart Van Assche wrote:
>> On 3/21/24 10:57, Christian Loehle wrote:
>>> In the long-term it looks like for UFS the problem will disappear as we are
>>> expected to get one queue/hardirq per CPU (as Bart mentioned), on NVMe that
>>> is already the case.
>>
>> Why the focus on storage controllers with a single completion interrupt?
>> It probably won't take long (one year?) until all new high-end
>> smartphones may have support for multiple completion interrupts.
>
> Apart from going to "This patch shows significant performance improvements on
> hardware that runs mainline today" to "This patch will have significant
> performance improvements on devices running mainline in a couple years"
> nothing in particular.
That doesn't make sense to me. Smartphones with UFSHCI 4.0 controllers
are available from multiple vendors. See also
https://en.wikipedia.org/wiki/Universal_Flash_Storage. See also
https://www.gsmarena.com/samsung_galaxy_s24-12773.php.
Bart.
next prev parent reply other threads:[~2024-03-25 17:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240304201625.100619-1-christian.loehle@arm.com>
[not found] ` <86f0af00-8765-4481-9245-1819fb2c6379@acm.org>
[not found] ` <0dc6a839-2922-40ac-8854-2884196da9b9@arm.com>
[not found] ` <c5b7fc1f-f233-4d25-952b-539607c2a0cc@acm.org>
[not found] ` <2784c093-eea1-4b73-87da-1a45f14013c8@arm.com>
[not found] ` <20240321123935.zqscwi2aom7lfhts@airbuntu>
2024-03-21 17:57 ` [RFC PATCH 0/2] Introduce per-task io utilization boost Christian Loehle
2024-03-21 19:52 ` Bart Van Assche
2024-03-25 12:06 ` Christian Loehle
2024-03-25 17:23 ` Bart Van Assche [this message]
2024-03-25 2:53 ` Qais Yousef
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