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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no 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 00D71C4338F for ; Wed, 28 Jul 2021 13:14:47 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id BD05260FE7 for ; Wed, 28 Jul 2021 13:14:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org BD05260FE7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 01B0F6B0036; Wed, 28 Jul 2021 09:14:46 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id F0D1E8D0001; Wed, 28 Jul 2021 09:14:45 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DFB3A6B006C; Wed, 28 Jul 2021 09:14:45 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0218.hostedemail.com [216.40.44.218]) by kanga.kvack.org (Postfix) with ESMTP id C28F06B0036 for ; Wed, 28 Jul 2021 09:14:45 -0400 (EDT) Received: from smtpin35.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 761408249980 for ; Wed, 28 Jul 2021 13:14:45 +0000 (UTC) X-FDA: 78412041330.35.629787D Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf29.hostedemail.com (Postfix) with ESMTP id 2049F90025BF for ; Wed, 28 Jul 2021 13:14:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=GLs20Pvs0SB3MahpgVmKF84+QdadWR1ytigyGFlYBm4=; b=Oqi+E/OHJ/M7SZ1NXx7hOvIAKC fBc+CT2dhNdTp0JULuvYQGXu0PlcQvQ/yntxBqAGROLw6QSIhY0mmaxrGbHtZgN6gec8naGVVAc1e tWeBguo1awqdFJnurXA4BNRruysyO+GMgHUX9ZeHsVxpyG8rx6t81jgGebB4KMeo9maIHPyb3v5s1 AGXjCRmOL8unO1cGTibHbmYgdqEu+yQNtb2I4pOddd7x2xxUAjZTFgynkVP/TustmZsQ/ncIp5E2W GZOw450Vrl4eXatAUwrCtrYul43sk+3+zvA++jDL4M9mOG4NTyeV+ORcgZ4HfPlJ08fWoW2cUEfan Jz9fOEcw==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1m8jNL-00G4lq-2R; Wed, 28 Jul 2021 13:13:50 +0000 Date: Wed, 28 Jul 2021 14:13:31 +0100 From: Matthew Wilcox To: Shivank Garg Cc: Linux Kernel Mailing List , Linux MM , util-linux@vger.kernel.org Subject: Re: /proc/pid/sched units Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 2049F90025BF Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b="Oqi+E/OH"; dmarc=none; spf=none (imf29.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org X-Stat-Signature: n89do3t9dkn479d4ags9djo454x7cbzw X-HE-Tag: 1627478083-979734 X-Bogosity: Ham, tests=bogofilter, spamicity=0.005179, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Jul 28, 2021 at 06:26:44PM +0530, Shivank Garg wrote: > 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. include/linux/sched/types.h: * @sum_exec_runtime: total time spent on the CPU, in nanoseconds why did that leave you more confused?