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=-0.8 required=3.0 tests=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 99E07C33CA1 for ; Wed, 5 Feb 2020 09:14:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6C7C2217BA for ; Wed, 5 Feb 2020 09:14:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728107AbgBEJOW (ORCPT ); Wed, 5 Feb 2020 04:14:22 -0500 Received: from mout-p-201.mailbox.org ([80.241.56.171]:33026 "EHLO mout-p-201.mailbox.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727068AbgBEJOW (ORCPT ); Wed, 5 Feb 2020 04:14:22 -0500 Received: from smtp2.mailbox.org (smtp2.mailbox.org [IPv6:2001:67c:2050:105:465:1:2:0]) (using TLSv1.2 with cipher ECDHE-RSA-CHACHA20-POLY1305 (256/256 bits)) (No client certificate requested) by mout-p-201.mailbox.org (Postfix) with ESMTPS id 48CG8r10mSzQl9f; Wed, 5 Feb 2020 10:14:20 +0100 (CET) X-Virus-Scanned: amavisd-new at heinlein-support.de Received: from smtp2.mailbox.org ([80.241.60.241]) by spamfilter06.heinlein-hosting.de (spamfilter06.heinlein-hosting.de [80.241.56.125]) (amavisd-new, port 10030) with ESMTP id cC-7nC6GS1d3; Wed, 5 Feb 2020 10:14:16 +0100 (CET) Date: Wed, 5 Feb 2020 10:14:14 +0100 From: Hagen Paul Pfeifer To: Andi Kleen Cc: linux-kernel@vger.kernel.org, Adrian Hunter , Jiri Olsa , Arnaldo Carvalho de Melo Subject: Re: [PATCH] perf script: introduce deltatime option Message-ID: <20200205091414.GB495987@virgo> References: <20200204173709.489161-1-hagen@jauu.net> <20200204231628.GF302770@tassilo.jf.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200204231628.GF302770@tassilo.jf.intel.com> X-Key-Id: 98350C22 X-Key-Fingerprint: 490F 557B 6C48 6D7E 5706 2EA2 4A22 8D45 9835 0C22 X-GPG-Key: gpg --recv-keys --keyserver wwwkeys.eu.pgp.net 98350C22 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Andi Kleen | 2020-02-04 15:16:28 [-0800]: >> $ perf script --deltatime > >It's already implemented as --reltime Nope ;-) $ perf script --ns --reltime sleep 49148 [000] 0.000000000: probe_libc:sbrk: (7f279d9144f0) sleep 49148 [000] 0.000009153: probe_libc:sbrk: (7f279d9144f0) sh 49151 [002] 0.099454082: probe_libc:sbrk: (7f9f1c6374f0) sh 49151 [002] 0.099468538: probe_libc:sbrk: (7f9f1c6374f0) curl 49153 [003] 0.114459574: probe_libc:sbrk: (7f9bb2dfb4f0) curl 49153 [003] 0.114474449: probe_libc:sbrk: (7f9bb2dfb4f0) [...] $ perf script --ns --deltatime sleep 49148 [000] 0.000000000: probe_libc:sbrk: (7f279d9144f0) sleep 49148 [000] 0.000009153: probe_libc:sbrk: (7f279d9144f0) sh 49151 [002] 0.099444929: probe_libc:sbrk: (7f9f1c6374f0) sh 49151 [002] 0.000014456: probe_libc:sbrk: (7f9f1c6374f0) curl 49153 [003] 0.014991036: probe_libc:sbrk: (7f9bb2dfb4f0) curl 49153 [003] 0.000014875: probe_libc:sbrk: (7f9bb2dfb4f0) [...] reltime is relative to the *first event* in the record - deltatime is relative to the *previous* event. Hagen