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,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 AF72CC04EBF for ; Mon, 23 Sep 2019 13:25:16 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 81749205F4 for ; Mon, 23 Sep 2019 13:25:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 81749205F4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:56510 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iCOL5-0002uQ-Le for qemu-devel@archiver.kernel.org; Mon, 23 Sep 2019 09:25:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56801) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iCOKC-0002MK-Fx for qemu-devel@nongnu.org; Mon, 23 Sep 2019 09:24:21 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iCOKB-0007ip-IY for qemu-devel@nongnu.org; Mon, 23 Sep 2019 09:24:20 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49374) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iCOKB-0007iS-CV for qemu-devel@nongnu.org; Mon, 23 Sep 2019 09:24:19 -0400 Received: from mail-pl1-f200.google.com (mail-pl1-f200.google.com [209.85.214.200]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5447B83F3D for ; Mon, 23 Sep 2019 13:24:18 +0000 (UTC) Received: by mail-pl1-f200.google.com with SMTP id d1so8563500plj.9 for ; Mon, 23 Sep 2019 06:24:18 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=51Lvc+oZ4iF9OX/rYG0s6r+aSOXa7YFt6xtyTuSnSTA=; b=P2Y7uQIL5ev2Tgmu5WdXpuBWzeCZRVnaChmxqfhW/cS23YjjJRs9mAuVgRgluA8OQq LdNGVAfjKWPI2sJR9k/uAnhIPZnmygPbjBGkjgSFNNsGKBqOEJaB35PnBGz6hbtx86z0 589KmXaTIGvGU2Dmbcbr9fF//c4LyxXgiIBXLbJymO5QxBC1UwWyYBAueDQYV6s8mJj/ MBkOqhTICrT7SHR7Sw/6PCbbAAabKoji1prHcfmiBVlFZtK0t6b4nawj4ZhFxOBBjK4I GdNbQcLp/zeADsd+9n5LOQ/dVJNCoBu2A5MYSqvF3Rc/eM5AaaRnNDElzfgp7japVhVv aUAA== X-Gm-Message-State: APjAAAVtrpMqt5G6+YcjlnapBUNzqfbU6jlCjbOp0aPbLb+8WeS515fZ Wzg3ZZ6o6Z/SVSrQBH6+yEeQWs2TLPesOVIj/QojCdhlf5LIS0kwrY6j7MuMp9yPCnDLcNs86tB OPDvFOhsLY3xbpAk= X-Received: by 2002:a63:364d:: with SMTP id d74mr9340803pga.416.1569245057771; Mon, 23 Sep 2019 06:24:17 -0700 (PDT) X-Google-Smtp-Source: APXvYqwn7R8ExqL6dOo9RfNbf8CbbqOVquGI7iXg6B+P5lt0xSf+BoNvzTVs9iL98Hj+Fq3p4eit6w== X-Received: by 2002:a63:364d:: with SMTP id d74mr9340769pga.416.1569245057394; Mon, 23 Sep 2019 06:24:17 -0700 (PDT) Received: from xz-x1 ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id h2sm18786911pfq.108.2019.09.23.06.24.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Sep 2019 06:24:16 -0700 (PDT) Date: Mon, 23 Sep 2019 21:24:07 +0800 From: Peter Xu To: "Dr. David Alan Gilbert (git)" Subject: Re: [PATCH 0/2] migration test tweeks Message-ID: <20190923132407.GA28074@xz-x1> References: <20190923131022.15498-1-dgilbert@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20190923131022.15498-1-dgilbert@redhat.com> User-Agent: Mutt/1.11.4 (2019-03-13) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: thuth@redhat.com, alex.bennee@linaro.org, qemu-devel@nongnu.org, quintela@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Mon, Sep 23, 2019 at 02:10:20PM +0100, Dr. David Alan Gilbert (git) wrote: > From: "Dr. David Alan Gilbert" > > Alex noticed that some of the postcopy tests would occasionally > hang; this series adds some checks to make them more likely > to assert than hang in some failure cases, and changes > the migration bandwidth so that under load it's much more likely > to manage to land in postcopy. > > Dr. David Alan Gilbert (2): > tests/migration: Fail on unexpected migration states > tests/migration/postcopy: trim migration bandwidth Reviewed-by: Peter Xu I might be even more aggresive on patch 2 when turning down the bandwidth. :) Another thing I thought about on the hang issue is that maybe we can give a timeout for the waits and when the timeout triggers before a directly assert in the test case we send sigabrt to QEMU (just like what kill_qemu does) then we could have a chance to see the cores. Not sure whether that could help, though. Regards, -- Peter Xu