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[23.128.96.18]) by mx.google.com with ESMTP id w11si6179504edx.430.2021.07.28.05.58.20; Wed, 28 Jul 2021 05:58:43 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=cK1Gmgnu; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236150AbhG1M5F (ORCPT + 99 others); Wed, 28 Jul 2021 08:57:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234256AbhG1M5E (ORCPT ); Wed, 28 Jul 2021 08:57:04 -0400 Received: from mail-ej1-x62f.google.com (mail-ej1-x62f.google.com [IPv6:2a00:1450:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9BD04C061757; Wed, 28 Jul 2021 05:57:02 -0700 (PDT) Received: by mail-ej1-x62f.google.com with SMTP id jg2so4529973ejc.0; Wed, 28 Jul 2021 05:57:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=Vouenykjxz8Zfu34+Mskh/eN5cURwPsT1oXHL6ep3V8=; b=cK1Gmgnuuw+nCYVW5Q13zVB3UJH26y520BJmLBSjJch2u7mVCKg7iAUUIzOH6vo45W jl1mvzzJopmYSuYrMpoP7KDZQCgXPRIGYTVrf+FdDHBFE31zzB0m4ld/9/ic/KdgkUDN W26ZXaxldpUiBqJGBILkh0CY6riJbxAt+9UVgnwITqRmsuKEo5b29hZ5Eqx0lpbnpI5z HyxQD3mtqN9KCp3nGcfPydMszaVDneoDugclGjoje3N+9pK8IKCNQf4kN/gGwwp/6btT d+swF+pJsThSEWg4aZK0aMG+d5KVfv+RGYt24ye7kTRrqt33VMEL+d/9IG+DGgFAPPDs mRvA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=Vouenykjxz8Zfu34+Mskh/eN5cURwPsT1oXHL6ep3V8=; b=N4ZwjgWCxB3Sripvheo9DBocOy1zTg2xXBi1bwDTGihJaPRmqj/keouFOZhaS8wDBh lpD71sc2Go+hK0lPKFD8kb2mWbaD7yB1zyB2x84hFIABiHW4b8XRESkRboeiRPFdyGo5 vLU5TdGr0L2VuIL1VDDwI+7BWneMVOA58TDGk5iF+cWOSkq2jaGAteczdJH5NoB/oHuq OaYh4EhlgnDWR5hn1qZfkzbFW8vwAFrGEEGnm72PndwcI/nP1YQvWmMqlbX/X4VyPcue MyaW3y9alf6r6XnR7h0GaclchTBkrY1wk2PD2VMlGPYS9iwqXNh7yCEplQd05qPkWwZK wqfQ== X-Gm-Message-State: AOAM533BfuQxuMzo3xn9B99qfNjkprDXSoC88im1GIy3oiuQvbUdRbAE 8hN329tbGRLGypVHCn/yg7uUeJKswjHh93rjNhxCTkHrQ83FS7rc X-Received: by 2002:a17:906:6011:: with SMTP id o17mr26316325ejj.157.1627477021019; Wed, 28 Jul 2021 05:57:01 -0700 (PDT) MIME-Version: 1.0 From: Shivank Garg Date: Wed, 28 Jul 2021 18:26:44 +0530 Message-ID: Subject: /proc/pid/sched units To: Linux Kernel Mailing List , Linux MM , util-linux@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Everyone, I'm analyzing the cpu time taken ("se.sum_exec_runtime" in /proc/$pid/sched) by process in different configurations for my project work. But I was not able to get the time units for the values displayed in the file. I tried searching it in source code - kernel/sched/cputime.c,include/linux/sched.h etc. but it left me more confused. Can you please answer me about the measurement units (is it microseconds, nanoseconds, jiffles ...) ? Also, I was not able to find proper documentation for /proc/pid/sched. Please point to me if it's already there. If not, I would love to contribute toward documenting these variables. It would be very helpful for newbies (like me) in future. Thanks, Best Regards, Shivank Garg