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Date: Thu, 28 May 2020 21:08:29 +0200 From: Patrick Bellasi <patrick.bellasi@...bug.net> To: Peter Zijlstra <peterz@...radead.org> Cc: Qais Yousef <qais.yousef@....com>, Giovanni Gherdovich <ggherdovich@...e.cz>, Ingo Molnar <mingo@...hat.com>, Randy Dunlap <rdunlap@...radead.org>, Jonathan Corbet <corbet@....net>, Juri Lelli <juri.lelli@...hat.com>, Vincent Guittot <vincent.guittot@...aro.org>, Dietmar Eggemann <dietmar.eggemann@....com>, Steven Rostedt <rostedt@...dmis.org>, Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>, Luis Chamberlain <mcgrof@...nel.org>, Kees Cook <keescook@...omium.org>, Iurii Zaikin <yzaikin@...gle.com>, Quentin Perret <qperret@...gle.com>, Valentin Schneider <valentin.schneider@....com>, Pavan Kondeti <pkondeti@...eaurora.org>, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org Subject: Re: [PATCH 1/2] sched/uclamp: Add a new sysctl to control RT default boost value [+Giovanni] On Thu, May 28, 2020 at 20:29:14 +0200, Peter Zijlstra <peterz@...radead.org> wrote... > On Thu, May 28, 2020 at 05:51:31PM +0100, Qais Yousef wrote: >> I had a humble try to catch the overhead but wasn't successful. The observation >> wasn't missed by us too then. > > Right, I remember us doing benchmarks when we introduced all this and > clearly we missed something. I would be good if Mel can share which > benchmark hurt most so we can go have a look. Indeed, would be great to have a description of their test setup and results. Perhaps Giovanni can also support us on that.
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