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Wed, 17 Dec 2025 14:56:02 -0800 (PST) Message-ID: Date: Wed, 17 Dec 2025 15:56:00 -0700 Precedence: bulk X-Mailing-List: fio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 5/5] Add option to specify ramp period by amount of IO To: Jan Kara , fio@vger.kernel.org Cc: Vincent Fu References: <20251217160217.15533-1-jack@suse.cz> <20251217161722.6357-5-jack@suse.cz> Content-Language: en-US From: Jens Axboe In-Reply-To: <20251217161722.6357-5-jack@suse.cz> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit 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