From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from wp530.webpack.hosteurope.de (wp530.webpack.hosteurope.de [80.237.130.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E3BFB17E for ; Fri, 13 May 2022 08:37:57 +0000 (UTC) Received: from [2a02:8108:963f:de38:eca4:7d19:f9a2:22c5]; authenticated by wp530.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) id 1npQo7-0007E5-IN; Fri, 13 May 2022 10:37:55 +0200 Message-ID: Date: Fri, 13 May 2022 10:37:55 +0200 Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [mm/page_alloc] f26b3fa046: netperf.Throughput_Mbps -18.0% regression #forregzbot Content-Language: en-US From: Thorsten Leemhuis To: "regressions@lists.linux.dev" References: <20220420013526.GB14333@xsang-OptiPlex-9020> <04c2cb21-a377-d996-8297-16cd7c744063@leemhuis.info> In-Reply-To: <04c2cb21-a377-d996-8297-16cd7c744063@leemhuis.info> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-bounce-key: webpack.hosteurope.de;regressions@leemhuis.info;1652431078;cc5c3ca6; X-HE-SMSGID: 1npQo7-0007E5-IN On 11.05.22 14:13, Thorsten Leemhuis wrote: > TWIMC: this mail is primarily send for documentation purposes and for > regzbot, my Linux kernel regression tracking bot. These mails usually > contain '#forregzbot' in the subject, to make them easy to spot and filter. Picked the wrong commit-id, fixing: #regzbot introduced: f26b3fa046116a7 > On 20.04.22 03:35, kernel test robot wrote: >> >> (please be noted we reported >> "[mm/page_alloc] 39907a939a: netperf.Throughput_Mbps -18.1% regression" >> on >> https://lore.kernel.org/all/20220228155733.GF1643@xsang-OptiPlex-9020/ >> while the commit is on branch. >> now we still observe similar regression when it's on mainline, and we also >> observe a 13.2% improvement on another netperf subtest. >> so report again for information) >> >> Greeting, >> >> FYI, we noticed a -18.0% regression of netperf.Throughput_Mbps due to commit: >> >> >> commit: f26b3fa046116a7dedcaafe30083402113941451 ("mm/page_alloc: limit number of high-order pages on PCP during bulk free") >> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master >> >> in testcase: netperf >> on test machine: 128 threads 2 sockets Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz with 128G memory >> with following parameters: >> >> ip: ipv4 >> runtime: 300s >> nr_threads: 1 >> cluster: cs-localhost >> test: UDP_STREAM >> cpufreq_governor: performance >> ucode: 0xd000331 >> >> test-description: Netperf is a benchmark that can be use to measure various aspect of networking performance. >> test-url: http://www.netperf.org/netperf/ >> [...] > > This regression is discussed quite a bit currently, so let's better add > it to the tracking: > > #regzbot ^introduced 39907a939a > #regzbot title mm: [mm/page_alloc] f26b3fa046: netperf.Throughput_Mbps > -18.0% regression > #regzbot ignore-activity > > Ciao, Thorsten