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 67E3728F3 for ; Wed, 11 May 2022 12:13:38 +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 1nolDd-0007Gi-LU; Wed, 11 May 2022 14:13:29 +0200 Message-ID: <04c2cb21-a377-d996-8297-16cd7c744063@leemhuis.info> Date: Wed, 11 May 2022 14:13:29 +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 To: "regressions@lists.linux.dev" References: <20220420013526.GB14333@xsang-OptiPlex-9020> From: Thorsten Leemhuis In-Reply-To: <20220420013526.GB14333@xsang-OptiPlex-9020> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-bounce-key: webpack.hosteurope.de;regressions@leemhuis.info;1652271218;9c3811d6; X-HE-SMSGID: 1nolDd-0007Gi-LU 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. 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