From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10873 invoked by alias); 27 Jan 2015 16:42:15 -0000 Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org Received: (qmail 10835 invoked by uid 89); 27 Jan 2015 16:42:13 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-1.0 required=5.0 tests=AWL,SPF_HELO_PASS,SPF_PASS,T_RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Tue, 27 Jan 2015 16:42:12 +0000 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id t0RGgAx0015880 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 27 Jan 2015 11:42:10 -0500 Received: from localhost (dhcp-10-15-16-169.yyz.redhat.com [10.15.16.169]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id t0RGg991003027 (version=TLSv1/SSLv3 cipher=AES128-GCM-SHA256 bits=128 verify=NO); Tue, 27 Jan 2015 11:42:09 -0500 From: Sergio Durigan Junior To: Mark Wielaard Cc: GDB Development , Eli Zaretskii Subject: Re: [ANNOUNCEMENT] GDB BuildBot References: <87bnm1exo6.fsf@redhat.com> <87lhkvd9u7.fsf@redhat.com> <1422350653.4858.35.camel@bordewijk.wildebeest.org> X-URL: http://blog.sergiodj.net Date: Tue, 27 Jan 2015 20:05:00 -0000 In-Reply-To: <1422350653.4858.35.camel@bordewijk.wildebeest.org> (Mark Wielaard's message of "Tue, 27 Jan 2015 10:24:13 +0100") Message-ID: <87ppa0npjy.fsf@redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-IsSubscribed: yes X-SW-Source: 2015-01/txt/msg00079.txt.bz2 On Tuesday, January 27 2015, Mark Wielaard wrote: > On Wed, 2015-01-21 at 17:53 -0500, Sergio Durigan Junior wrote: >> First, thanks to Mark Wielaard for setting up a Debian Wheezy x86_64 >> machine as one of our buildslaves! > > BTW. I saw more spurious failures on this setup than on the other > buildbot slaves. After lots of digging it turns out that all released > versions of dejagnu have a bug that causes spurious fails in some cases > on SMP machines... > > The patch to fix that was posted back in 2005, and was picked up by > fedora in 2006. Which explains why I could reproduce it on my Fedora or > RHEL setups. But at least Debian based distros don't have this patch > yet, since it is not in the latest 1.5.1 dejagnu release yet. > > It is in upstream dejagnu git now: > https://lists.gnu.org/archive/html/dejagnu/2011-03/msg00019.html > > Full writeup is in the Debian bug report: > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=776362 > > If you are running a buildbot slave (or just make gdb-check) and run a > machine with multiple cores you might want to check that you have the > above patch applied to prevent some spurious FAILs. Wow :-). Thanks for the investigation, Mark. It is probably worth putting this info in the wiki: . I will put it there later (if you don't beat me to it). Cheers, -- Sergio GPG key ID: 0x65FC5E36 Please send encrypted e-mail if possible http://sergiodj.net/