From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 82218 invoked by alias); 25 Jul 2015 23:21:12 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 82202 invoked by uid 89); 25 Jul 2015 23:21:12 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=AWL,BAYES_00,KAM_LAZY_DOMAIN_SECURITY,RP_MATCHES_RCVD,SPF_HELO_PASS 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; Sat, 25 Jul 2015 23:21:10 +0000 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (Postfix) with ESMTPS id 92624228; Sat, 25 Jul 2015 23:21:09 +0000 (UTC) Received: from localhost (unused-10-15-17-51.yyz.redhat.com [10.15.17.51]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id t6PNL8o0018400 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Sat, 25 Jul 2015 19:21:09 -0400 From: Sergio Durigan Junior To: Patrick Palka Cc: Doug Evans , Doug Evans , "gdb-patches\@sourceware.org" Subject: Re: [PATCH 5/8] gen-pert-test: parallel build support References: <001a11c301ba95cb5e051b62da63@google.com> X-URL: http://blog.sergiodj.net Date: Sat, 25 Jul 2015 23:21:00 -0000 In-Reply-To: (Patrick Palka's message of "Sat, 25 Jul 2015 14:39:01 -0400") Message-ID: <87d1zf4ye3.fsf@redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-IsSubscribed: yes X-SW-Source: 2015-07/txt/msg00763.txt.bz2 On Saturday, July 25 2015, Patrick Palka wrote: >>> This patch seems to have caused a number of regressions: >>> >>> http://gdb-build.sergiodj.net/builders/Fedora-x86_64-m64/builds/1502 >>> http://gdb-build.sergiodj.net/builders/Fedora-x86_64-m32/builds/1501 >>> http://gdb-build.sergiodj.net/builders/Fedora-i686/builds/1510 >>> >>> (possibly among others) >>> >>> Reverting this patch locally makes the regressions disappear for me, >>> at least on x86_64-m64. >> >> I can't repro this. >> It's odd that this patch would cause these particular regressions: >> >> http://gdb-build.sergiodj.net/builders/Fedora-x86_64-m32/builds/1501/steps/regressions/logs/regressions >> >> http://gdb-build.sergiodj.net/builders/Fedora-x86_64-m64/builds/1502/steps/regressions/logs/regressions >> >> Also, I don't understand this one: >> >> http://gdb-build.sergiodj.net/builders/Debian-x86_64-m64/builds/1420 >> >> I can imagine makefile hacking for the perf tests breaking normal make check, >> but then I'd expect the damage to be far more extensive, but the patch >> reported in 1420 cannot have caused those regressions. > > In this case, the regressions listed for build 1420 originated from build 1417: > > http://gdb-build.sergiodj.net/builders/Debian-x86_64-m64/builds/1417 > > The baseline for checking for regressions is not the build before, but > rather it's a "rolling" baseline or something like that. Sorry, as it turns out I found a bug in the way BuildBot calculated the regressions for the current build. Unfortunately it wasn't correctly updating the previous_gdb.sum file, which is used to directly calculate the regressions against the last build. The bug has been fixed now; it has been introduced a few days ago, so not many builds have been compromised. Also, the regressions reported *were* valid; the only problem was that they were being reported over and over for every build. -- Sergio GPG key ID: 237A 54B1 0287 28BF 00EF 31F4 D0EB 7628 65FC 5E36 Please send encrypted e-mail if possible http://sergiodj.net/