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=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 716C9C7618F for ; Tue, 16 Jul 2019 21:50:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 383B221743 for ; Tue, 16 Jul 2019 21:50:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="scTJtW/B" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728566AbfGPVu5 (ORCPT ); Tue, 16 Jul 2019 17:50:57 -0400 Received: from mail-wm1-f52.google.com ([209.85.128.52]:35002 "EHLO mail-wm1-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728235AbfGPVu5 (ORCPT ); Tue, 16 Jul 2019 17:50:57 -0400 Received: by mail-wm1-f52.google.com with SMTP id l2so20099744wmg.0 for ; Tue, 16 Jul 2019 14:50:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=42G/3BprKnOub7UwnHOYU1v4U6hgA8jcD4mYuzJL1lA=; b=scTJtW/BJVdtTxLIyggN7BdEGhNzi/Nb2t6gvLt5ij41uvFVLQTGDJjL6Dk9NJsVBt +py89SZaZ8KiJoJRoyxJ3NglwAhmMO7S/1UTT51Zdf4vX5sVEg8QEhwiye3JZT53oK0n MrK/WTeTrpQTo7zFDjATV6t6JocwS3BJ14LvRiUjmXWMKCcj5dy3JsRtg7qIQ3272bdK VzDoJXnXe8kwSvOUlR8tL7TPJfwi8HVPtKIKVVR89NkBCYxQu36nuDtkIsLnmDjcKGHp zN0SJupgsr3snhw7xzY0fLXIl1l1jIEPyszKZod71nyYYDUFBJ35A4JPhAIiFi2MRSXb amwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=42G/3BprKnOub7UwnHOYU1v4U6hgA8jcD4mYuzJL1lA=; b=R6qaRA+wDPmacY1u6RpNGAFzGxq80GM3UTqfca/RancSnUsbJGDitn5YVKiL+PaWL/ gJ3rgUuEuuJYjkLyK3s6tNZ4ZNHO4ln97LN89sYDedJbGcCtKFQJYAWsm6yBHKtme2KE bYd9n6zx7pX6cgTRPOkQRnP23GcwMikm2XDbC91MOslHSVrXndbLXoYjEcHbVZme/kUH yFAYKO0tqh1MPRD9oXbzk0lQvPm1/0Z3doovocKNkNw9xdlgtFw7XVgHTZyv3diwAT7f /fGZMpFza3eAPGkUmDCWBykGCHxKGgE9VMClT6JlozeceNL4hy/Qec/oB11JwDL2tr8z gkZg== X-Gm-Message-State: APjAAAWiIKLAEY7iQ6qnsZAnx9CNSn7Uj1tRSDmkOOqq+OGJP+425vYl sP5NYoar+p14s3byJW5Y7GA1kMHmjYH3Z31iJxFpRdTJ X-Google-Smtp-Source: APXvYqxVmfCDv/w0hdWSLPBAN41L1Mlnns27sM/f0emk0ehpxm5/8AZrvQ5dsS3ZtEMwHI8/onZAIE7NRiCdwWDicSA= X-Received: by 2002:a1c:eb0a:: with SMTP id j10mr34306731wmh.1.1563313855478; Tue, 16 Jul 2019 14:50:55 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Paul Thomas Date: Tue, 16 Jul 2019 17:50:43 -0400 Message-ID: Subject: Re: poor cyclictest results with 5.0 series rt for arm64 To: Thomas Gleixner Cc: linux-rt-users@vger.kernel.org, dunc.mcphie@gmail.com Content-Type: text/plain; charset="UTF-8" Sender: linux-rt-users-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org > > We do have trace data for a instance where cyclictest hit 5000 uS, but > > the file is large 11MB, and I wasn't sure if I should directly attach > > it to the email. What is the best way to post or send this? > > Can you upload the trace to some place? If you don't have storage, just use > bugzilla.kernel.org and open a bug, attach it and post a reference. Hi Thomas, I've put the last 60k line of the trace on the bug report here: https://bugzilla.kernel.org/show_bug.cgi?id=204189 Just looking at the timestamp time of cyclicte-2778 I can see the last two finish_task_switch calls are seperated by 5801 uS. Is just before that the correct place to be looking? -Paul