From nobody Thu Dec 18 06:31:19 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DBA1FC7113B for ; Thu, 24 Aug 2023 08:06:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240360AbjHXIGG (ORCPT ); Thu, 24 Aug 2023 04:06:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59948 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240401AbjHXIFj (ORCPT ); Thu, 24 Aug 2023 04:05:39 -0400 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 977D1198E for ; Thu, 24 Aug 2023 01:05:02 -0700 (PDT) Received: from pps.filterd (m0360072.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 37O81TSp028258; Thu, 24 Aug 2023 08:04:21 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding; s=pp1; bh=IgtOcm4rENQZENZQzaZU/dkds05wpAQNREcodI3KFSI=; b=T0DMmliK7mD6izN+s0K/Iz8gI0j0p+V4kePnQQun0mRKorg3ED6OBHUCDW9h/R0LQwe7 b6pHXshKQnJIG0Z53PnqWeSvlq4w7mXpyqXUIawNxlfZecKIxrlwPFCVdEHwr7g1MAnQ I/ZTHrgweJxbB0PXmNiVoLK1URMrmMMG70kK1BQjt73iiLDjwuv9JByMwylRlnS9722J Fl4BIEfez5Kw/x8Et0t8SwvNdz7Q6sAJKApIc+E17B2JajTGYyG/Cz6wz+n3cdz0Y4Bw CsBNJdFalMV+Vhs4O/Zy0SNrPsUYLTrvAeiQSzcOSmHQ/TwJFW/2cQ/SCW5/wdtoPu1/ PA== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3sp3b5g2d7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 24 Aug 2023 08:04:21 +0000 Received: from m0360072.ppops.net (m0360072.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 37O83f0w004023; Thu, 24 Aug 2023 08:04:20 GMT Received: from ppma11.dal12v.mail.ibm.com (db.9e.1632.ip4.static.sl-reverse.com [50.22.158.219]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3sp3b5g2c7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 24 Aug 2023 08:04:20 +0000 Received: from pps.filterd (ppma11.dal12v.mail.ibm.com [127.0.0.1]) by ppma11.dal12v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 37O7C4SZ010383; Thu, 24 Aug 2023 08:04:19 GMT Received: from smtprelay02.fra02v.mail.ibm.com ([9.218.2.226]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 3sn21swdj5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 24 Aug 2023 08:04:19 +0000 Received: from smtpav05.fra02v.mail.ibm.com (smtpav05.fra02v.mail.ibm.com [10.20.54.104]) by smtprelay02.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 37O84H0w17236520 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 24 Aug 2023 08:04:18 GMT Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C7BDD2004B; Thu, 24 Aug 2023 08:04:17 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C65FA20071; Thu, 24 Aug 2023 08:04:15 +0000 (GMT) Received: from li-c1fdab4c-355a-11b2-a85c-ef242fe9efb4.in.ibm.com (unknown [9.109.201.126]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 24 Aug 2023 08:04:15 +0000 (GMT) From: Shrikanth Hegde To: peterz@infradead.org, vincent.guittot@linaro.org, mingo@redhat.com Cc: sshegde@linux.vnet.ibm.com, srikar@linux.vnet.ibm.com, linux-kernel@vger.kernel.org, dietmar.eggemann@arm.com, mingo@kernel.org, lukasz.luba@arm.com, claudio@evidence.eu.com Subject: [PATCH] sched/Documentation: Modify the knob to base_slice_ns Date: Thu, 24 Aug 2023 13:33:42 +0530 Message-Id: <20230824080342.543396-1-sshegde@linux.vnet.ibm.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: xqUf3Ny6UkcKsEQh173Polmb_CP_6zEP X-Proofpoint-GUID: qwg08eDKWlEtP4yxoiuGGUSC5dwQaHtY X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-24_05,2023-08-22_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 bulkscore=0 phishscore=0 spamscore=0 suspectscore=0 mlxlogscore=999 priorityscore=1501 malwarescore=0 impostorscore=0 clxscore=1011 adultscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2308240061 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" After committing scheduler to EEVDF, since commit e4ec3318a17f ("sched/debug: Rename sysctl_sched_min_granularity to sysctl_sched_base_slice") sysctl has been changed. In the documentation its mentioned that its one of the central tunable available for feed into the scheduler. This changes the doc as well. Fixes: e4ec3318a17f ("sched/debug: Rename sysctl_sched_min_granularity to s= ysctl_sched_base_slice") Signed-off-by: Shrikanth Hegde --- Documentation/scheduler/sched-design-CFS.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/scheduler/sched-design-CFS.rst b/Documentation/s= cheduler/sched-design-CFS.rst index 03db55504515..f68919800f05 100644 --- a/Documentation/scheduler/sched-design-CFS.rst +++ b/Documentation/scheduler/sched-design-CFS.rst @@ -94,7 +94,7 @@ other HZ detail. Thus the CFS scheduler has no notion of= "timeslices" in the way the previous scheduler had, and has no heuristics whatsoever. There is only one central tunable (you have to switch on CONFIG_SCHED_DEBUG): - /sys/kernel/debug/sched/min_granularity_ns + /sys/kernel/debug/sched/base_slice_ns which can be used to tune the scheduler from "desktop" (i.e., low latencie= s) to "server" (i.e., good batching) workloads. It defaults to a setting suitab= le -- 2.31.1