From: Jens Axboe <axboe@kernel.dk>
To: Jan Kara <jack@suse.cz>, fio@vger.kernel.org
Cc: Vincent Fu <vincentfu@gmail.com>
Subject: Re: [PATCH 5/5] Add option to specify ramp period by amount of IO
Date: Wed, 17 Dec 2025 15:56:00 -0700 [thread overview]
Message-ID: <be8e2e1b-a77e-4985-b283-9b22fe87144a@kernel.dk> (raw)
In-Reply-To: <20251217161722.6357-5-jack@suse.cz>
On 12/17/25 9:17 AM, Jan Kara wrote:
> In some cases the ramp up period is not easy to define by amount of
> time. This is for example a case of buffered writes measurement where we
> want to start measuring only once dirty throttling kicks in. The time
> until dirty throttling kicks in depends on dirty limit (easy to figure
> out) and speed of writes to the page cache (difficult to know in
> advance). Add option ramp_size which determines the ramp up period by
> the amount of IO written (either by each job or by each group when group
> reporting is enabled).
Looks fine, but needs cconv additions and bumping of the server version
number or this won't work on client/server configurations.
--
Jens Axboe
next prev parent reply other threads:[~2025-12-17 22:56 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-17 16:17 [PATCH 0/5] Add support for specifying ramp up period by amount of IO Jan Kara
2025-12-17 16:17 ` [PATCH 1/5] time: rename in_ramp_time() and ramp_time_over() Jan Kara
2025-12-17 22:52 ` Damien Le Moal
2025-12-19 3:53 ` fiotestbot
2025-12-17 16:17 ` [PATCH 2/5] td: Initialize ramp_period_over based on options Jan Kara
2025-12-17 22:53 ` Damien Le Moal
2025-12-17 16:17 ` [PATCH 3/5] eta: Use in_ramp_period() instead of opencoding it Jan Kara
2025-12-17 22:55 ` Damien Le Moal
2025-12-17 16:17 ` [PATCH 4/5] time: Evaluate ramp up condition once per second Jan Kara
2025-12-17 22:58 ` Damien Le Moal
2025-12-17 16:17 ` [PATCH 5/5] Add option to specify ramp period by amount of IO Jan Kara
2025-12-17 22:56 ` Jens Axboe [this message]
2025-12-18 17:18 ` Jan Kara
2025-12-17 23:03 ` Damien Le Moal
2025-12-18 16:31 ` Jan Kara
2025-12-19 8:12 ` Damien Le Moal
2025-12-19 13:10 ` Jan Kara
2025-12-18 15:19 ` Vincent Fu
2025-12-18 17:18 ` Jan Kara
2025-12-18 21:42 ` Vincent Fu
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