From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 398C2C433E0 for ; Fri, 3 Jul 2020 12:33:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 13FEC207DA for ; Fri, 3 Jul 2020 12:33:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="eYoe86Aq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726245AbgGCMdt (ORCPT ); Fri, 3 Jul 2020 08:33:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53590 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726108AbgGCMdt (ORCPT ); Fri, 3 Jul 2020 08:33:49 -0400 Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 10CC4C08C5C1; Fri, 3 Jul 2020 05:33:49 -0700 (PDT) Received: by mail-wr1-x441.google.com with SMTP id f7so29474174wrw.1; Fri, 03 Jul 2020 05:33:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=YWChRI8U5bql1vd+LjhcuGDJidA2Y+nrVW69k/TqKfM=; b=eYoe86Aq3092+g8H38oZiqt99elOVS4MoiOjphvAWqqYBA/PQlpSx1orjs/kxGvdHH S6Rfw6c7V1AXmEmDQRSvGRgQk6poNEE4iUDwyHOYJdILTvBwtej70+stDofMtxR1T+NH M7IMHFtBRWbzhk7wfGMp/JVtx9jlG91ZptUclVdfND0jcjXPkkaqKJHgTKQuJK4Udgt5 hE0fDw2vI9yP014m9M4wL3h15ciKQzo12fVdIWj0+IdXoRWhHkXKwjfGdC0LddutzTCF /yBvvPFMBhd15wV4caEZllD25LZCgWf4qO3F142/83sK1ODiG9xQuq6FonSNFHEdzZoG KNzg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=YWChRI8U5bql1vd+LjhcuGDJidA2Y+nrVW69k/TqKfM=; b=ti5Y5wMS4VpQhJuY/Wx2jLg+vXoOz9KfFnG0SGzdv5iNqwc/ho9qYaccyUtQrv0zq0 rwS/uO9ABQiCtFY9OwW7SgZq1ibaydPACtk5WbPd19zlK82HnzoWSgUz2JIbKe7osTPW N68nU58BQSF1m/NxwBKNs00fOobENStgFbmUtpMGgM4juCsdkpcKKL1n51J7B3kx5Prq 7rx5Bh/7aneaeDC+Oa9RUGQzRFT/fVh11cA/yIVYr0GI/znI0cCWnDb31/PWQn/PBTut SxNCpRU9+T8F2YwWWZgIhOBCWkb7SFuNm+bt7d874Pl2/WFZcy4d89aK/9TmaQuIAGLQ hEhA== X-Gm-Message-State: AOAM5316YnteKMj3Eb40iZ+LD5W5gENMVANFNVCeC4eLoriA78HcNzLk cNGZ5kLxi/qTt/Xn3ahAjJc= X-Google-Smtp-Source: ABdhPJwId5pwOgLxvZeA3ibhyN3Y+1w1NlrODeEKmyNzl20XnLaQ2ZKRszG8w9ZVwtoqDjhX2uPt7Q== X-Received: by 2002:a5d:5642:: with SMTP id j2mr36401397wrw.19.1593779627773; Fri, 03 Jul 2020 05:33:47 -0700 (PDT) Received: from macmini.local (181.4.199.77.rev.sfr.net. [77.199.4.181]) by smtp.gmail.com with ESMTPSA id f12sm14292219wrw.53.2020.07.03.05.33.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Jul 2020 05:33:47 -0700 (PDT) Date: Fri, 3 Jul 2020 14:33:46 +0200 From: Willy Wolff To: Chanwoo Choi Cc: lukasz.luba@arm.com, k.konieczny@samsung.com, krzk@kernel.org, kgene@kernel.org, s.nawrocki@samsung.com, b.zolnierkie@samsung.com, chanwoo@kernel.org, myungjoo.ham@samsung.com, kyungmin.park@samsung.com, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [RFC PATCH 0/2] PM / devfreq: Add delayed timer for polling Message-ID: <20200703123346.6fy6i33ks6nox46a@macmini.local> References: <20200703062622.11773-1-cw00.choi@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200703062622.11773-1-cw00.choi@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Hi Chanwoo, I think it doesn't help on the benchmark I suggested that is doing only memory accesses. With both timer, I have the same timing. To test the benchmark with these new patches about timer: git clone https://github.com/wwilly/benchmark.git \ && cd benchmark \ && source env.sh \ && ./bench_build.sh \ && bash source/scripts/test_dvfs_mem_patched.sh The benchmark is set by default to run for 1s, but you can increase this by tweaking the script as: taskset 8 ./bench_install/bin/microbe_cache 33554431 0 9722222