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=-4.5 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 A06B2C433E0 for ; Wed, 10 Feb 2021 15:48:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 644C164E0B for ; Wed, 10 Feb 2021 15:48:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231481AbhBJPsH (ORCPT ); Wed, 10 Feb 2021 10:48:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58354 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230005AbhBJPr7 (ORCPT ); Wed, 10 Feb 2021 10:47:59 -0500 Received: from mail-ej1-x633.google.com (mail-ej1-x633.google.com [IPv6:2a00:1450:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 73F83C061574 for ; Wed, 10 Feb 2021 07:47:19 -0800 (PST) Received: by mail-ej1-x633.google.com with SMTP id bl23so5054330ejb.5 for ; Wed, 10 Feb 2021 07:47:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=1PP5sqUGj0s891oDCrPCVRXq4i/mWQrbDliMv/tbwiI=; b=LZHeTGFIgrlyr1EVZRQ1yE/CLXCo7l1DCWW6s6/VlhCSneXE7jXDD8cuJ5yqHH0gMX OEfQA71dMKbn7kg6T9fUfIXRd1gFu0iKxsQH0XnouRTKPRwF9Zf0kgzTLNN2/OVtyq6e Ct0myy+Rprdgcpp4bsOLmLun22rRyvnEKkowkClvm4Ha4z0rCjp5y3lvEZPRln+7XqCw t14uDlFGG5HQNRHwNb0PcxyeLw9b0HtQEUUO4uGoCvUim3BM1Qlv75Xr2MSVC1CvB1qW w6bLEH8HMxcz5elnY8dGvKCCP3KI/gXRQHkIeAyElz7F6bkyk2zB1Fr5WHzzkrAAu+wd efbQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=1PP5sqUGj0s891oDCrPCVRXq4i/mWQrbDliMv/tbwiI=; b=VKOiCAXOwoPW5nfh9wRQ9Xooqe7rtnUcBuODcDX059OqpYR+YoVLt9iL3Iu92gc9C5 TFNey1BamRq2tDK0D0FKzIdVKtmanObqw0GXJbyWD3lX1xuDJrzZieJXTJ4iSH3feLlT Br2+c90OTfOsMWin4su0MG4VG1gy6xiq7QjuSeBBXgJS8xnV7gWEEqTk0FLpCBRadcDl z41rfwAEmwKfXiAc0qGj2aniTurttwTIxFGb1ylkO/AxLc4YruVNHelbN+1EgtU83Ny0 oIMpFgK5H2Sm3cZTjN8o3+VYB1XSpKLoWAqUJ6tgS76YlPJMaodOSzEr+JuvxfIH/R3h z+2A== X-Gm-Message-State: AOAM533ZKc5oMBSr1dxOCTZeu5tiCTLh263T6I2mxWQqle1m0nQUEXnS WqUnKwftXKW1vG2foa2v0PM= X-Google-Smtp-Source: ABdhPJx6Wr3B2LqLRClznBSd3nkMKdbCSRAhNj7R6tiizr91vPvj8zFYb0RNKVzekeZX4eUbyOP4hA== X-Received: by 2002:a17:906:7c43:: with SMTP id g3mr3527382ejp.210.1612972038251; Wed, 10 Feb 2021 07:47:18 -0800 (PST) Received: from [192.168.43.143] (212-39-89-103.ip.btc-net.bg. [212.39.89.103]) by smtp.gmail.com with ESMTPSA id g23sm1547847ejd.27.2021.02.10.07.47.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 10 Feb 2021 07:47:17 -0800 (PST) Subject: Re: Kernelshark v2 all-black plots area To: Dario Faggioli , Linux Trace Devel , Steven Rostedt , Tzvetomir Stoyanov References: <89dbef38a1050c31390ce263d51fff1f72a42164.camel@suse.com> <38b5ea14-cea2-1268-13ef-539fe421e442@gmail.com> From: "Yordan Karadzhov (VMware)" Message-ID: <60fd40d8-23ab-6518-4e8b-6d66bbd53f5a@gmail.com> Date: Wed, 10 Feb 2021 17:47:16 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-trace-devel@vger.kernel.org Hi Dario, On 10.02.21 г. 16:51 ч., Dario Faggioli wrote: > And this is how the GUI looks: > > http://xenbits.xen.org/people/dariof/ks2-debug/kernelshark-v2-host.png > > Then, I append the trace-(null).dat file (the guest trace). I do see > this on the terminal: I see what you mean. In this case the host and the guest are not synchronized at all. I guess something went wrong during the recording. Also the fact that the name of the guest VM is "(null)" looks very suspicious. I guess this is not the real name of the VM you are using? Steven, do you have any idea what can cause such problem? Thanks! Yordan