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Fri, 06 Oct 2023 18:54:34 +0200 Message-ID: <6d9da2d1ae8bd90a176cf457e42da79db4353fa9.camel@gmx.de> Subject: Re: [PATCH] sched/fair: fix pick_eevdf to always find the correct se From: Mike Galbraith To: Peter Zijlstra Cc: Marek Szyprowski , Biju Das , "bsegall@google.com" , "bristot@redhat.com" , "chris.hyser@oracle.com" , "corbet@lwn.net" , "dietmar.eggemann@arm.com" , "gregkh@linuxfoundation.org" , "joel@joelfernandes.org" , "joshdon@google.com" , "juri.lelli@redhat.com" , "kprateek.nayak@amd.com" , "linux-kernel@vger.kernel.org" , "mingo@kernel.org" , "patrick.bellasi@matbug.net" , Pavel Machek , "pjt@google.com" , "qperret@google.com" , "qyousef@layalina.io" , "rostedt@goodmis.org" , "tglx@linutronix.de" , "tim.c.chen@linux.intel.com" , "timj@gnu.org" , "vincent.guittot@linaro.org" , "youssefesmat@chromium.org" , "yu.c.chen@intel.com" , "mgorman@suse.de" , "linux-renesas-soc@vger.kernel.org" Date: Fri, 06 Oct 2023 18:54:30 +0200 In-Reply-To: <20231006155501.GH36277@noisy.programming.kicks-ass.net> References: <20231005150258.GA36277@noisy.programming.kicks-ass.net> <553e2ee4-ab3a-4635-a74f-0ba4cc03f3f9@samsung.com> <867f5121d7d010cacf938c293f862b0cea560ec2.camel@gmx.de> <20231006140042.GG36277@noisy.programming.kicks-ass.net> <20231006155501.GH36277@noisy.programming.kicks-ass.net> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.42.4 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K1:dXaYts8Tdu0lpth/DZMGohzfPWpV2IYb4OchV8l/56P8m7JTTQa WpjD4kPFIX3BnBliClUP+8EaLn9RW+39yuYuIAjWWZItN6XUg6VgLmprE/elJX7mThjADGG hTQMyv+ejoRb/BLzQy4iGIpC/TxScxxC+Z5CMNOzNZzNXaU2xn5t6AJCHzVIeXuD0eGFShL qCaNscNCT2LVOno3CmKyw== UI-OutboundReport: notjunk:1;M01:P0:iOVDf4fmlyA=;tRzYy9GU/97AK7WYzHrWeaxQgKT FGLmeNorcAx8rpdHc3KuF2Xv659srBQibo9wNP8F2YgFSB8zwcBlZBBFvMGmPtX6AVdW1lCIH 0k1oCe14LDyGjq1rmesB1gAYq3wbOFj+AAmJgbyGta2e1D6AQWVW80JWPp1kOTbhIXSvTpYky 9A574woJ7ZFQ53NtDsR+n1NMy/ZALK01FDUpzYVEIcM0zmTR2TUkO3DDe6CmpYo0I+byexuZP rpwuAJgi7YsMeWr+1r15xC7VqcCGdsY3SIztZf5tATgCT78lbgHya9DyUWWs7GlIzJaT41BSz 9io4lHLqsqxJIuCJ9Hna2Xz/+S5MT+lfldqe7Cm2bAWHjsot98qZAVbbbpkkmgqTSWQfD7CPo K3JrujLaMxra732TbsuwptSYCxyrLzRMYOks34Uz9v7+HB9ntsB2pUUsH4XbfqSs/FwrrFsL5 ouKILakUbXFbPsLUPNvYe5/k92PJIqvi84tiLsQCZwp6zCuoub+0ypVhSU1yjNLUN384/UNJF u6wMRCD2z/s3UPcn9uw2BDKAWx5LrBNESer+SXle5a1mZMfHufdSAu+59k5h4bgxFPH41a5ST YQ+mRrL6b/Lkp7IKEqQB7EJ84ysIiyEBITMXZM9s9Jn8c7Em6FV1ziUVcRz8krYsAt8r6albm 1erKuBdT0/sPpu71fNMYsy0Hi8FTQn8a4bY9uo1jBKAQxbPQ5NrGewdScJHRX7zSakELDejhX hhgaoWBhpkHqeyBs54Qtm4Ry78EoeD34X4VF9qdTr4usOU5Am44noRtbxvJyqyDOLLOwkCOcu bsHQNtV+NnzbtczwZq3Q6mVLfXZtW71g7RsOoWtusLI2rIAw1cjNu2ocwbH4xGElFy81SpE3P MXATOrFtGlgYGdUv9knNXhqK8zQkZPTbNAcwftbaJw+Taj64hn5HECoFeDLAb2QQeA1z1ZAcx kJXb3g== X-Spam-Status: No, score=3.0 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_SBL_CSS, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on agentk.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (agentk.vger.email [0.0.0.0]); Fri, 06 Oct 2023 09:55:55 -0700 (PDT) X-Spam-Level: ** On Fri, 2023-10-06 at 17:55 +0200, Peter Zijlstra wrote: > If I create two groups (or two users with autogroup on) and have them > both build a kernel I do indeed get splat. Ah, my desktop setup is two wide konsole instances with 14 tabs each for old testament /me (dang dinky universe) and internet stuff running as a mere mortal, so lots of groups. -Mike