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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 44C1CC3A589 for ; Thu, 15 Aug 2019 13:23:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 21BC32084D for ; Thu, 15 Aug 2019 13:23:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732276AbfHONXG (ORCPT ); Thu, 15 Aug 2019 09:23:06 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35826 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732232AbfHONXF (ORCPT ); Thu, 15 Aug 2019 09:23:05 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id D48D3300740A; Thu, 15 Aug 2019 13:23:04 +0000 (UTC) Received: from krava (unknown [10.43.17.33]) by smtp.corp.redhat.com (Postfix) with SMTP id EB8A810016E8; Thu, 15 Aug 2019 13:23:02 +0000 (UTC) Date: Thu, 15 Aug 2019 15:23:02 +0200 From: Jiri Olsa To: Jin Yao Cc: acme@kernel.org, jolsa@kernel.org, peterz@infradead.org, mingo@redhat.com, alexander.shishkin@linux.intel.com, Linux-kernel@vger.kernel.org, ak@linux.intel.com, kan.liang@intel.com, yao.jin@intel.com Subject: Re: [PATCH v4] perf diff: Report noisy for cycles diff Message-ID: <20190815132302.GI30356@krava> References: <20190813073037.3420-1-yao.jin@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190813073037.3420-1-yao.jin@linux.intel.com> User-Agent: Mutt/1.12.1 (2019-06-15) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.42]); Thu, 15 Aug 2019 13:23:04 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 13, 2019 at 03:30:37PM +0800, Jin Yao wrote: > This patch prints the stddev and hist for the cycles diff of > program block. It can help us to understand if the cycles > is noisy or not. > > This patch is inspired by Andi Kleen's patch > https://lwn.net/Articles/600471/ now that we have sparks support, we could respin it ;-) jirka