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Tue, 10 Jan 2023 15:58:00 +0900 (KST) Received: from epsmtrp1.samsung.com (unknown [182.195.40.13]) by epcas5p3.samsung.com (KnoxPortal) with ESMTPA id 20230110064319epcas5p3de72dc6ff06df62ba8d6441878c4ea6b~43388wV6U2908329083epcas5p3t; Tue, 10 Jan 2023 06:43:19 +0000 (GMT) Received: from epsmgms1p1new.samsung.com (unknown [182.195.42.41]) by epsmtrp1.samsung.com (KnoxPortal) with ESMTP id 20230110064319epsmtrp13f3408332ae4cdd1edd6ccc890f1864a~43387vzrz3052030520epsmtrp17; Tue, 10 Jan 2023 06:43:19 +0000 (GMT) X-AuditID: b6c32a4b-287ff70000010d22-45-63bd0c785c69 Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id 6A.C2.02211.6090DB36; Tue, 10 Jan 2023 15:43:19 +0900 (KST) Received: from green5.sa.corp.samsungelectronics.net (unknown [107.110.206.5]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20230110064318epsmtip21d71396f8d701e581a989c1607fae4af~4338Lqcsd1176911769epsmtip2I; Tue, 10 Jan 2023 06:43:18 +0000 (GMT) From: Ankit Kumar To: axboe@kernel.dk Cc: fio@vger.kernel.org, vincentfu@gmail.com, Ankit Kumar Subject: [PATCH 1/1] doc: clarify the usage of rw_sequencer Date: Tue, 10 Jan 2023 12:12:40 +0530 Message-Id: <20230110064240.30344-2-ankit.kumar@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230110064240.30344-1-ankit.kumar@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrOKsWRmVeSWpSXmKPExsWy7bCmhm4Fz95kgz+T9S3WXPnNbrH6bj+b xcdZL5gtNrQJOrB47Jx1l93j8tlSj74tqxg9Pm+SC2CJyrbJSE1MSS1SSM1Lzk/JzEu3VfIO jneONzUzMNQ1tLQwV1LIS8xNtVVy8QnQdcvMAVqopFCWmFMKFApILC5W0rezKcovLUlVyMgv LrFVSi1IySkwKdArTswtLs1L18tLLbEyNDAwMgUqTMjOuN4bXNAvUnH84SOWBsblAl2MnBwS AiYSi1avZOti5OIQEtjNKPH30Q0WCOcTo8TGu+uhnG+MEn9OHWaDaZn3YjkTiC0ksJdR4ktz CURRM5PE7dUvmUESbALaEq/e3gCzRQSEJfZ3tLKA2MwCoRInr31h72Lk4BAWsJb4/jQDJMwi oCqxrGk5I4jNK2AjcX96A9QueYnVGw4wg5RzCthK/N8dALJKQmAVu8S3vR9ZIGpcJJoWdDFB 2MISr45vYYewpSRe9rdB2dkSmx7+hKopkDjyopcZwraXaD3VDzafWUBTYv0ufYiwrMTUU+uY IC7mk+j9/QSqlVdixzwYW1Xi773bUCdIS9x8dxXK9pB4vuYPKyRIJjBKrD1wjn0Co9wshBUL GBlXMUqmFhTnpqcWmxYY56WWw6MsOT93EyM4RWl572B89OCD3iFGJg7GQ4wSHMxKIrwrOfck C/GmJFZWpRblxxeV5qQWH2I0BYbfRGYp0eR8YJLMK4k3NLE0MDEzMzOxNDYzVBLnTd06P1lI ID2xJDU7NbUgtQimj4mDU6qByUZVTGTPP45Vhzc9vS9cJZ8o5lsVN+VRVsesRYfvhV3orX0k WrNwZWj0ottJSedc34c37eO+KmrKs/DN3Q1fn8QI2TO4BX2duHFSV2hOa4bhlObHq85vzxUz lxefvenGhW/vNfcELUo+Wv/1w4NPW38IMGvaqqgzH3Rpsfrpt+6V7Z6ljYqeLOXN/+uC2sVm ZaTlPjgb/7P1vOObxC5p22NZlauYpFZ5HWsSnPbgcsBxf8sZ5vu5klVPKK40K+9jODVvV9D0 UvYjUUUnrF6ErHdd4ff9UvDi61YxOftzF87/oKWnnyzeNzXnKNNHo5iNB+boaNouDFuvx8Jn yehimLPv0vbb1exZYUorK/PrlFiKMxINtZiLihMB4TxpqdoDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrDJMWRmVeSWpSXmKPExsWy7bCSvC47595kg9+lFmuu/Ga3WH23n83i 46wXzBYb2gQdWDx2zrrL7nH5bKlH35ZVjB6fN8kFsERx2aSk5mSWpRbp2yVwZVzvDS7oF6k4 /vARSwPjcoEuRk4OCQETiXkvljN1MXJxCAnsZpS4dXsjexcjB1BCWmLh+kSIGmGJlf+es0PU NDJJfJr/hhUkwSagLfHq7Q1mEFsEqGh/RysLiM0sEC4x/cBkRpA5wgLWEt+fZoCEWQRUJZY1 LWcEsXkFbCTuT29gg5gvL7F6wwFmkHJOAVuJ/7sDQMJCQCW7uvawTGDkW8DIsIpRMrWgODc9 t9iwwDAvtVyvODG3uDQvXS85P3cTIziAtDR3MG5f9UHvECMTB+MhRgkOZiUR3pWce5KFeFMS K6tSi/Lji0pzUosPMUpzsCiJ817oOhkvJJCeWJKanZpakFoEk2Xi4JRqYNq1qEB/SRDj9wo2 ruOLe5nvK+5oZr/4oGpfx+ODS5jfm+3d9Lzgp/Y8p38X1zfYOT39Xrlxv0s4e8R+6YAcx067 vaaf53KtvxQmvH3DI8YpzV//P4z9We05oc31iPe8Wqn//3a/WHKbbx3Lh/uvcnJbq/UDeuLv 15ocPHC6eAFLzYc8s8QZ7xoO/ZtUkR12jEVjbsuMInaXY02XT2w0N9J9/kTwv5z6bt5pG0un JHtm753n8ui02IHnCYd7Qg8/+P3JQ+HbJMFt58Ucop0DrnJkfcnn+iq74euEZfHsSyc0S4fd Zeuv5pj8c9H+d0nXG+WWzTohvdZu8oGzmT1qOy2NL7U7mCQ8ZtGa9KVu2gdOJZbijERDLeai 4kQAnQWAzI8CAAA= X-CMS-MailID: 20230110064319epcas5p3de72dc6ff06df62ba8d6441878c4ea6b X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20230110064319epcas5p3de72dc6ff06df62ba8d6441878c4ea6b References: <20230110064240.30344-1-ankit.kumar@samsung.com> Precedence: bulk List-ID: X-Mailing-List: fio@vger.kernel.org Update man page clarifying the usage of rw_sequencer=sequential Fixes: https://github.com/axboe/fio/issues/1223 Signed-off-by: Ankit Kumar --- HOWTO.rst | 10 +++++----- fio.1 | 12 ++++++------ 2 files changed, 11 insertions(+), 11 deletions(-) diff --git a/HOWTO.rst b/HOWTO.rst index 0a48a453..806c1053 100644 --- a/HOWTO.rst +++ b/HOWTO.rst @@ -1176,11 +1176,11 @@ I/O type Generate the same offset. ``sequential`` is only useful for random I/O, where fio would normally - generate a new random offset for every I/O. If you append e.g. 8 to randread, - you would get a new random offset for every 8 I/Os. The result would be a - seek for only every 8 I/Os, instead of for every I/O. Use ``rw=randread:8`` - to specify that. As sequential I/O is already sequential, setting - ``sequential`` for that would not result in any differences. ``identical`` + generate a new random offset for every I/O. If you append e.g. 8 to + randread, i.e. ``rw=randread:8`` you would get a new random offset for + every 8 I/Os. The result would be one single random offset and 7 + sequential offset. As sequential I/O is already sequential, setting + ``sequential`` for that would not result in any difference. ``identical`` behaves in a similar fashion, except it sends the same offset 8 number of times before generating a new offset. diff --git a/fio.1 b/fio.1 index eb87533f..c5ba0436 100644 --- a/fio.1 +++ b/fio.1 @@ -952,12 +952,12 @@ Generate the same offset. .P \fBsequential\fR is only useful for random I/O, where fio would normally generate a new random offset for every I/O. If you append e.g. 8 to randread, -you would get a new random offset for every 8 I/Os. The result would be a -seek for only every 8 I/Os, instead of for every I/O. Use `rw=randread:8' -to specify that. As sequential I/O is already sequential, setting -\fBsequential\fR for that would not result in any differences. \fBidentical\fR -behaves in a similar fashion, except it sends the same offset 8 number of -times before generating a new offset. +i.e. `rw=randread:8' you would get a new random offset for every 8 I/Os. The +result would be one single random offset and 7 sequential offset. As +sequential I/O is already sequential, setting \fBsequential\fR for that would +not result in any difference. \fBidentical\fR behaves in a similar fashion, +except it sends the same offset 8 number of times before generating a new +offset. .RE .TP .BI unified_rw_reporting \fR=\fPstr -- 2.17.1