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[109.43.178.193]) by smtp.gmail.com with ESMTPSA id lf20-20020a0562142cd400b005dd8b9345f2sm456497qvb.138.2023.04.06.05.30.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 06 Apr 2023 05:30:08 -0700 (PDT) Message-ID: <2e529c06-199f-6d5a-a75b-5b88aae44b2c@redhat.com> Date: Thu, 6 Apr 2023 14:30:06 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.13.0 Subject: Re: s390 private runner CI job timing out Content-Language: en-US To: Christian Borntraeger , Peter Maydell Cc: QEMU Developers , =?UTF-8?Q?Alex_Benn=c3=a9e?= References: <4521ce29-1d11-f253-7a7d-342f6bd9e6b0@redhat.com> <3b5cc225-50e8-e56d-3fa8-da052a515beb@linux.ibm.com> <149e9342-b48b-0871-ee4d-96c6f1d3f198@linux.ibm.com> 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: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 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=-2.224, 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 06/04/2023 14.13, Christian Borntraeger wrote: > > > Am 06.04.23 um 14:05 schrieb Peter Maydell: >> On Thu, 6 Apr 2023 at 12:17, Christian Borntraeger >> wrote: >>> >>> Am 06.04.23 um 12:44 schrieb Peter Maydell: >>>> On Thu, 6 Apr 2023 at 11:40, Christian Borntraeger >>>> wrote: >>>>> Am 06.04.23 um 11:21 schrieb Peter Maydell: >>>>>> Christian, does our S390X machine get a guaranteed amount of CPU, >>>>>> or does it depend on what else is running on the hardware? >>>>> >>>>> I think its a shared system with shared CPUs. Can you check the steal >>>>> time in top or proc? If this is far too high we could ask to give you >>>>> more weight for that VM. >>>> >>>> It's idle at the moment and steal time seems to be low (0.0 .. 0.3); >>>> I'll try to remember to check next time it's running a job. >>>> >>> >>> Do you have /proc/stat ? >> >> Yes; hopefully it means more to you than it does to me :-) >> >> linux1@qemu01:~$ cat /proc/stat >> cpu  60904459 604975 15052194 1435958176 17128179 351949 758578 22218760 0 0 >> cpu0 15022535 146734 3786909 358774818 4283172 98313 237156 5894809 0 0 >> cpu1 15306890 151164 3746024 358968957 4378864 85629 172492 5434255 0 0 >> cpu2 15307709 157180 3762691 359141276 4138714 85736 176367 5474594 0 0 >> cpu3 15267324 149895 3756569 359073124 4327428 82269 172562 5415101 0 0 > > This is > user,nice,system,idle,iowait,irq,softirq,steal,guest,guest_nice > So overall there is some (20-30% since the last reboot) steal going on. > Not sure if this is the real problem since it is only Ubuntu 20.04. > Does a higher timeout make the problem go away? The thing is: it shouldn't take that long to build QEMU and run the tests here, theoretically. Some days ago, the job was finishing in 39 minutes: https://gitlab.com/qemu-project/qemu/-/jobs/3973481571 The recent run took 74 minutes: https://gitlab.com/qemu-project/qemu/-/jobs/4066136770 That's almost a factor of two! So there is definitely something strange going on. Thomas