From: Daniel Wagner <dwagner@suse.de>
To: Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Cc: Chaitanya Kulkarni <chaitanyak@nvidia.com>,
"linux-nvme@lists.infradead.org"
<linux-nvme@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
Shin'ichiro Kawasaki <shinichiro@fastmail.com>,
Hannes Reinecke <hare@suse.de>
Subject: Re: [PATCH blktests v4 09/11] nvme{045,047}: Calculate IO size for random fio jobs
Date: Thu, 1 Jun 2023 10:46:21 +0200 [thread overview]
Message-ID: <wcbwh4ju5c5chtxyuekffwn3uvjnlqy2fanltr6d7x34lgbrfc@nluc3kfnwych> (raw)
In-Reply-To: <5duh22ydzwth2z2sd4oo22cuaqlazxq3u5m7vo5qfkp4fgec7w@elzdr6vbksgv>
Sorry for the late response, had to deal with a lot of high prio stuff...
On Fri, May 19, 2023 at 01:36:17AM +0000, Shinichiro Kawasaki wrote:
> On May 17, 2023 / 04:44, Chaitanya Kulkarni wrote:
> > On 5/11/23 07:09, Daniel Wagner wrote:
> > > _nvme_calc_run_io_size() returns the jobs size for _run_fio_rand_io()
> > > function. The jobs size is the size per job, thus we have to divide
> > > through the number of CPUs.
> >
> > sorry I didn't understand why we have to divide through number of
> > CPUs ? isn't tht will change the current job size of the test ?
> >
> > unless we are increasing somewhere which I missed it .
>
> This change reduces the I/O size per job, but it keeps the total I/O size
> regardless of the number of CPUs. This will keep test case runtime reasonable
> on systems with hundreds of CPUs.
Yes, indeed.
> As for the test case nvme/045, it tests re-authentication. I don't think it
> requires total I/O size proportional to number of CPUs. As for the test case
> nvme/047, it exercises different queue types (write queue and poll queue). Does
> it require total I/O size proportional to number of CPUs? Daniel is the test
> case author, and I guessed he is ok with the change.
Yes :)
Thanks for applying these patches!
next prev parent reply other threads:[~2023-06-01 8:46 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-11 14:09 [PATCH blktests v4 00/11] nvme testsuite runtime optimization Daniel Wagner
2023-05-11 14:09 ` [PATCH blktests v4 01/11] nvme/rc: Auto convert test device size info Daniel Wagner
2023-05-11 14:09 ` [PATCH blktests v4 02/11] nvme{014/015}: Do not hard code device size for dd test Daniel Wagner
2023-05-11 14:09 ` [PATCH blktests v4 03/11] common/xfs: Make size argument optional for _xfs_run_fio_verify_io Daniel Wagner
2023-05-11 14:09 ` [PATCH blktests v4 04/11] common/xfs: Limit fio size job to fit into xfs fs Daniel Wagner
2023-05-17 4:37 ` Chaitanya Kulkarni
2023-05-11 14:09 ` [PATCH blktests v4 05/11] nvme{032,040}: Use runtime fio background jobs Daniel Wagner
2023-05-17 4:40 ` Chaitanya Kulkarni
2023-05-18 7:52 ` Daniel Wagner
2023-05-18 8:38 ` Chaitanya Kulkarni
2023-05-11 14:09 ` [PATCH blktests v4 06/11] Documentation: Add info on nvme_trtype Daniel Wagner
2023-05-11 14:09 ` [PATCH blktests v4 07/11] nvme: Make test image size configurable Daniel Wagner
2023-05-11 14:09 ` [PATCH blktests v4 08/11] nvme: Add minimal test image size requirement Daniel Wagner
2023-05-11 14:09 ` [PATCH blktests v4 09/11] nvme{045,047}: Calculate IO size for random fio jobs Daniel Wagner
2023-05-17 4:44 ` Chaitanya Kulkarni
2023-05-19 1:36 ` Shinichiro Kawasaki
2023-06-01 8:46 ` Daniel Wagner [this message]
2023-05-11 14:09 ` [PATCH blktests v4 10/11] nvme{002,030}: Move discovery generation counter code to rc Daniel Wagner
2023-05-13 10:27 ` Chaitanya Kulkarni
2023-05-11 14:09 ` [PATCH blktests v4 11/11] nvme{016,017}: Make the number iterations configurable Daniel Wagner
2023-05-25 23:59 ` [PATCH blktests v4 00/11] nvme testsuite runtime optimization Shinichiro Kawasaki
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