From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f53.google.com (mail-wr1-f53.google.com [209.85.221.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4CDC2257825 for ; Mon, 25 May 2026 07:25:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.53 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779693907; cv=none; b=VIQG/pLrMRMsQMm0nLgDYfl0HiW6BgvN2Nt/6/k3mcBkUfh548YQtVhF01EUe8seCJ0nnpJwtE+KDvsm2ygmztXY+xcs2wmreRhLXUbE9rd3MR0vlARBbmPXS9OtCmJpAN5r/k7zWlCaeiSopwWJcVVTgeu4s68JziYfXfSkCpQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779693907; c=relaxed/simple; bh=PgeQrqIEVc9w2YssJaZcnMHHyzQie7152kdNQAODb98=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: Content-Type; b=eLvuGvI9e5+H+VWxNOVFLDB9t9GdCmcwF7/4+m6Fp2sxqdBUiXsDjrRpbXFJdHRz47DBOovosITv0ITMgqr1Sd/sBV9QW5gP1/S5LCAcNxXw6TKw8XMQTMjCQYaTiDr8gxjaFdX7Y61YSBpANEQyNi/NMGcwZcQrFNOjloUDtJ8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=i4JI61E7; arc=none smtp.client-ip=209.85.221.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="i4JI61E7" Received: by mail-wr1-f53.google.com with SMTP id ffacd0b85a97d-45e9f4a3510so2230332f8f.1 for ; Mon, 25 May 2026 00:25:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1779693905; x=1780298705; darn=vger.kernel.org; h=references:in-reply-to:subject:cc:to:from:message-id:date:from:to :cc:subject:date:message-id:reply-to; bh=ZrC/xVxW/llunYutJ6gFI6IQ8HYQjFbIZxZJVA2EI0Q=; b=i4JI61E7mhCv/OqyFIbABEmMj4HOzDWbAAlo4NecnzaCwEZr460nhI+U00jSHmmkEk Vsfa+Nroros2CFL4Zvz28Ui1FEzfBl8TJrTkY5l6s8ljRTKzEkP1Ni3UT1NEbzzYKZAX M4IjrXIaM4y2nWH2Ygb6KNVOPB0JFWYepMeXHt42x2YlmovMAwVGzkUlYzGUW1F3reW4 J4POUnxdvMraa9R9NRHbmV/zKdFs5FxZUScEy97CAoc52rsdpfpNfE4FpesZ9v10qwfM 45qOkiwigwVN6EAVbxkZxWwxuuvB5EXi2kzp51bvoNIUX1TDd3uueHoivFnyx1jPdWy1 vcdw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1779693905; x=1780298705; h=references:in-reply-to:subject:cc:to:from:message-id:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ZrC/xVxW/llunYutJ6gFI6IQ8HYQjFbIZxZJVA2EI0Q=; b=XEu5B772uWzRGLlAVQvN2d8Z9K6/a3zlRr+ZodxB6x20Rn31jcU8LuxUo2tj42KiLz O+uxigc2w0FKcmO4dullUmRRPok4pWikG3AxPxiyB871Ai+5kRbSdNNBrgimzpzekdO4 lqF6CqfFqSRfpvHnSGfwU3ZRJQPKNAbg6tdKZr0Bx8OFoXKwYOm3FeXBHvkdr5FWjncH ZQzF7r/Z3zpcoVzYlZIK6kjzRBW8n1k0Cw4MLFDzwlPo0EFZsV/mFoRKFZnIGEw/PODJ yWXHPgDVzt7etQSYtbnd7LtNraEYhqzkegkzoYx5wPDHliZWKFOxQQSkMguat80rZJ5T KiTA== X-Forwarded-Encrypted: i=1; AFNElJ/feF2TJS3aUNBsuFtWu1QkdcNt2QA/tvvKLW3LgEevKvUiwZ9EmRJnkXzMOw4qB5tkAU+vN+oGfbglcmw=@vger.kernel.org X-Gm-Message-State: AOJu0YxifLg3gmEckiCDdgECAuQeeZJFVbmHnVW4r92okS/udIbUgZmc vr92x1ededE1fuMVflM3yod4llwXHAp+/AAmAilF3vHC/5SSyOwiojWf X-Gm-Gg: Acq92OHQLHlEzjK5Rqvbnil2YT5+aahZ5MquBnYnTbnw8ScDbbx6Df6wjLKyiEThDYL oQYdQ6oBduuIRdpDnE/IJl5DdyONNAoL+MJSKA3Egy18ruiO2Q5DeebquAwyuJHOoBc4u8NDcP5 qn79iVPnukcleJeaqn1DTSyT6RPxDpk0JHhtjI+m9bXFC/6FWeCR9lTxLjcZ2bCgcqH+RAE7by4 Oj4bzvgbr0HcCumVYOaxd/t5oaBq7Z3JpP61H+EM30w1b1gk6H+Oa4f60JDbhd7PFTyFOLYo5EH /utGfdAznRZtmDoxv7mQwGrfk6C0Ab4dxd7hFYO2io2fHujdUg8c4Y3F0i94+XXN63W6q1IGgyd r67ZC+w5CwYBVkY9NKWjdR0iR9JcvbHj07BU1YrUMT1/a/Wu6ZuRM9nau0jhcA0I5EsE0KGD2No 8tpaHIEORsf77+vCSHpl28ppcjdLf79KV5fOthMBll5Msh5vNNSlB0nvkMG2FC85f2uRV24bY4/ 5QH2aWH/PqRIcwFUlN8KZVSA3Wm14PGvI2FDmNe+2tseHAgWxmUWH8kIDQFh5loYllioyjCNNgT Fo9Ivzj1T17Cj3SRzpBLhWQ+fXALBTLNeBKYh61wNufXfD2Pu86YQuYP X-Received: by 2002:a05:600c:4f88:b0:490:50eb:b777 with SMTP id 5b1f17b1804b1-49050ebb9e0mr157934785e9.5.1779693904535; Mon, 25 May 2026 00:25:04 -0700 (PDT) Received: from localhost (ip-082-212-034-085.um22.pools.vodafone-ip.de. [82.212.34.85]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-490417a3be1sm108629415e9.3.2026.05.25.00.25.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 May 2026 00:25:03 -0700 (PDT) Date: Mon, 25 May 2026 09:25:03 +0200 Message-ID: <354f22c2bdb7b59933ecbe75ffbdcc81.tomge68@gmail.com> From: Tom Gebhardt To: Christian Loehle Cc: Qais Yousef , linux-kernel@vger.kernel.org, Peter Zijlstra , Ingo Molnar , Vincent Guittot Subject: Re: [PATCH v2 00/13] sched/fair/schedutil: Better manage system response time In-Reply-To: References: <20260504020003.71306-1-qyousef@layalina.io> <20260515014250.tueinbuk7ldttdop@airbuntu> <32dea9123588227a02971341b22e84d3.tomge68@gmail.com> <28c59186-4ba0-44f4-b5b8-42f6f73cd3e6@arm.com> <318a4aaf404b66f7a04ed4d4a18d228a.tomge68@gmail.com> Content-Type: text/plain; charset=UTF-8 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Hi Christian, Here is the patch I applied on top of rpi-7.0.y: https://gist.github.com/Kletternaut/640445f82d2c1f50d5b19d2f6803b395 It is a single combined patch containing marioroy's 10-patch ttwu series plus Vincent's util_est refactoring (with a manual context fixup in the DELAY_DEQUEUE hunk -- see previous mail for details). To reproduce: git clone https://github.com/raspberrypi/linux.git -b rpi-7.0.y --depth=1 cd linux curl -L https://gist.githubusercontent.com/Kletternaut/640445f82d2c1f50d5b19d2f6803b395/raw/0001-sched-ttwu-patch-series-Vincent-s-util_est-refactori.patch | git apply The benchmark I used: stress-ng --pipe 4 --metrics-brief --timeout 20 (stress-ng 0.15.06, 4 workers, 20 s, bogo ops/s real time) Tom