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[109.43.176.203]) by smtp.gmail.com with ESMTPSA id e18-20020adffc52000000b002ca864b807csm1968091wrs.0.2023.03.03.03.28.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 03 Mar 2023 03:28:59 -0800 (PST) Message-ID: <188bd1ff-4ea2-6d92-2b6e-6f19af3df232@redhat.com> Date: Fri, 3 Mar 2023 12:28:57 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.13.0 Subject: Re: [PATCH] tests/qtest/migration-test: Disable migration/multifd/tcp/plain/cancel Content-Language: en-US To: Peter Maydell , quintela@redhat.com Cc: =?UTF-8?Q?Daniel_P=2e_Berrang=c3=a9?= , qemu-devel@nongnu.org, =?UTF-8?Q?Alex_Benn=c3=a9e?= , "Dr. David Alan Gilbert" References: <20230302172211.4146376-1-peter.maydell@linaro.org> <87edq6i4jf.fsf@secure.mitica> From: Thomas Huth In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.129.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.092, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 03/03/2023 12.18, Peter Maydell wrote: > On Fri, 3 Mar 2023 at 09:10, Juan Quintela wrote: >> >> Daniel P. Berrangé wrote: >>> On Thu, Mar 02, 2023 at 05:22:11PM +0000, Peter Maydell wrote: >>>> migration-test has been flaky for a long time, both in CI and >>>> otherwise: >>>> >>>> https://gitlab.com/qemu-project/qemu/-/jobs/3806090216 >>>> (a FreeBSD job) >>>> 32/648 ERROR:../tests/qtest/migration-helpers.c:205:wait_for_migration_status: assertion failed: (g_test_timer_elapsed() < MIGRATION_STATUS_WAIT_TIMEOUT) ERROR >>>> >>>> on a local macos x86 box: > > > >> What is really weird with this failure is that: >> - it only happens on non-x86 > > No, I have seen it on x86 macos, and x86 OpenBSD > >> - on code that is not arch dependent >> - on cancel, what we really do there is close fd's for the multifd >> channel threads to get out of the recv, i.e. again, nothing that >> should be arch dependent. > > I'm pretty sure that it tends to happen when the machine that's > running the test is heavily loaded. You probably have a race condition. I think I can second that. IIRC I've seen it a couple of times on my x86 laptop when running "make check -j$(nproc) SPEED=slow" here. Thomas