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=-7.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,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 C389CC433B4 for ; Tue, 4 May 2021 13:28:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A0737613CA for ; Tue, 4 May 2021 13:28:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231156AbhEDN3K (ORCPT ); Tue, 4 May 2021 09:29:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44352 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231127AbhEDN3K (ORCPT ); Tue, 4 May 2021 09:29:10 -0400 Received: from hr2.samba.org (hr2.samba.org [IPv6:2a01:4f8:192:486::2:0]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 84D16C061574; Tue, 4 May 2021 06:28:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=samba.org; s=42; h=Date:Message-ID:From:Cc:To; bh=hVi4JKdpd7bTk4RdXZOXhzQdF+xeih0pHyzet/IpH4o=; b=GkMcUwUogomY0TC0mlYd1YN62g Tfam9DJKtm/UEB3fVvkCaXuyJmPaqyjdZWrLhEd5Crb4Xt95uQCrl2bybCmnbuFI884PKjmCtvNlm uuPBBXP+uPBEFoDPrlC7Mj/6m/C/C2Fy1VxErtWmW9r0HAOHs4JPOBX9JkiiukYDdV/CjyZfrNxVW F4FKn+B9+zkjcMlqei6Z8aAbxF5bJ1fl3BcfFtJoX5ekNe10VwX3wh82iSoKb7ifJV2DwQUpwISd2 W7XStoB2k4sDK0G5eB09dB3DRb1siqs7qIoBwXVMNxJduwQyfQEqE5dP9KQSbfv6ZZEQlHrKwEw2u P2d7Vczi1wspNlZ9YOiJlDvsvZUiqQxrRqNapLJgQ19SY5gCxgTdGdgFv2Q5hdOxnhRyjg6UchEl1 uN92nsAGAVo+sO7jZJmiDsrUmDLDomTdxgR0QnRBsvIxpTBaFJA7vNR1mLvgF1rXh8LD3XPwhVhNW 8Hqg+up3IvOistlVxMBDq7wa; Received: from [127.0.0.2] (localhost [127.0.0.1]) by hr2.samba.org with esmtpsa (TLS1.3:ECDHE_RSA_CHACHA20_POLY1305:256) (Exim) id 1ldv5x-00063w-4B; Tue, 04 May 2021 13:28:13 +0000 Subject: Re: Tracing busy processes/threads freezes/stalls the whole machine To: Steven Rostedt Cc: Ingo Molnar , linux-trace-devel@vger.kernel.org, io-uring References: <293cfb1d-8a53-21e1-83c1-cdb6e2f32c65@samba.org> <20210504092404.6b12aba4@gandalf.local.home> From: Stefan Metzmacher Message-ID: Date: Tue, 4 May 2021 15:28:12 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 In-Reply-To: <20210504092404.6b12aba4@gandalf.local.home> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Am 04.05.21 um 15:24 schrieb Steven Rostedt: > On Thu, 22 Apr 2021 16:26:57 +0200 > Stefan Metzmacher wrote: > >> Hi Steven, hi Ingo, >> > > Sorry, somehow I missed this. > >> # But >> # trace-cmd record -e all -P 7 > > I'm curious. > > What is the clock set to? What does: > > # trace-cmd list -C > > show? On both machine (physical and VM): trace-cmd list -C [local] global counter uptime perf mono mono_raw boot x86-tsc Thanks for looking at it! metze