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Wed, 12 Apr 2023 06:05:36 +0200 Message-ID: <9954d9bb880bd1a2736853e19602f3b552b961e4.camel@gmx.de> Subject: Re: [PATCH 00/17] sched: EEVDF using latency-nice From: Mike Galbraith To: Hillf Danton Cc: Peter Zijlstra , mingo@kernel.org, vincent.guittot@linaro.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mgorman@suse.de, bristot@redhat.com, corbet@lwn.net, kprateek.nayak@amd.com, youssefesmat@chromium.org, joel@joelfernandes.org Date: Wed, 12 Apr 2023 06:05:34 +0200 In-Reply-To: <20230412025042.1413-1-hdanton@sina.com> References: <20230328092622.062917921@infradead.org> <20230410082307.1327-1-hdanton@sina.com> <20230411133333.1790-1-hdanton@sina.com> <20230412025042.1413-1-hdanton@sina.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.42.4 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:ZsIro73K9oEtSFjuh0yUwv6oaDl9aG7TSfqILiIisv+yf5UXPr5 Hv5gnqadA2N+FWneWD7JQMzLAL61e2FSCOfj+GVNXrGmq4GwqkXl8TNAarSohBUYC22GFgn 3zBOGn5yAMJkaeN+hD1o69BjkTd9QAfdrhDWJN7Axh7aodw5pkLPdn3UuoL/8Uh/mfdku2m ebPRxsu3LpH6VVB9040ZA== UI-OutboundReport: notjunk:1;M01:P0:omXiVLhlkRM=;NjBSGlFVjdGC2kL9huaQT8uiKca GQRzH/gAgCGqQDT0eA82uEPa4C9r+ipx5X0FECOduOkpdUmwIS5G6uzidlDkdtkrMbNPJ2+5i CmvF4If2oeb0xuNO4xc0sZGGT4EePpryUKoQrE03q4kLSN5+813TatyHhCf13s1hAgxBa1nA9 vq3F3ehXjjxYAju0cPur8QR3rOjPXUkgxUcls9hxU5rgRK3/KdMtEb6zxMyH5/GQJnOs0fhWS LOdQrw2F9jbJQ5ig/7j0A8GtxYmYzI3R3vqMGegXmMgA359M9nj1ggbAiEpzDXlZGhKWQdI4H JGFYp1IH9GCAfrgy31iBmiKDZFka3+e5Go4qhNeBlb9YfaKUJUCBzeQllfqZxYJa00nA3+6ms iFAC91P0EEaSHidbEsWacAM6c/0OwCVjtQ76kcIe28u0g+uHRTuyP8qFc9Vh/mGHDYHSlKixc qRy58tv/XRNRKUAWqVscNOOK0adQGG7cHFP1AkbCICwhzXMcfUT2HngAqQ4XFidZ8+vhD9FCv +a6HWbtdVhwmRkK2w0TBll/uCTRJJuNzc5AoqrrZUKezA/0URVDz542MpEQWWtJp2t6mJ22+k 8TtGX/YDiQw1IG0JcBy//j2jl8R0PrkLxpZZffqjHbd++0EUw0JUBKjMkdonOjo+hOfdWmQqy jRAdYz0YzWQuVC07VpnQFXMEt1jwLikbyx55s8psIf9ijxseEdBsCDh5bNCM5X8YPOyW4tJjY 2CMgshqmtHOmh7kJUTk0V0wfvNkoAkeXGfFjpC37+AwrTdY0j/nfjsMxGXGD30xGoeKzOq9kI e6seU4TJ+9m4kqDAa37snRT4754bdI1JP0p/MpWcds/Zs/VuwP5BTsVbyuEvsloShT/lCAtZq A9XZDzaG+FYPOwLfSNFMbYbYRXlr6okigi2ikibJtO3d690i3wlRDtD0NcqEY9+SbBsoQXkBX 8CRBxifG0MleUE9BxNhN0jIarIY= X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 81BD04000F X-Rspam-User: X-Stat-Signature: yk7tcc7xautw1ai3y73kexjffckur5pi X-HE-Tag: 1681272344-620611 X-HE-Meta: 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 y4HhueOB fB1pxFquCansK4YFGmxOaCW/id2j5FgtaOjOHOVOGDjs70pHH4P14rpVitrxCHv3v/RVtLS+eOJpsgrAn4CBebR+bvY8WS0W/QCraIV9gZ9dyYXPjcW42vswP6Tk6n2MpU8ul5q7l5g6qo4SH6+KSI+Z1sPhWoyuwjVIGdPN4vYRoaRLLYCKOoHX3cBf7sU2jDUK6jeio4MqktY7bg7sfQJpL6qY4j4q8OaAh4F0lWt9Yx6w+OaMV0hK0wRkpadis/MHuHlMlB8yC9vYAdTloVsqvAa6QIVxL9sEXNspAjesmS4WcEeYyMYBismLsFgixLfH6TsEmECQV2+g= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, 2023-04-12 at 10:50 +0800, Hillf Danton wrote: > On Tue, 11 Apr 2023 16:56:24 +0200 Mike Galbraith > > > The data from you and David (lat_nice: -12 throughput: -.9% to 0.25%) is > supporting eevdf, given a optimization <5% could be safely ignored in ge= neral > (while 10% good and 20% standing ovation). > There's nothing pro or con here, David's testing seems to agree with my own testing that a bit of adjustment may be necessary and that's it. Cold hard numbers to developer, completely optional mitigation tweak to fellow tester.. and we're done. -Mike