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Petersen" , LKML , Linux Memory Management List , linux-ide@vger.kernel.org, lkp@lists.01.org, lkp@intel.com, ying.huang@intel.com, feng.tang@intel.com, zhengjun.xing@linux.intel.com, fengwei.yin@intel.com References: From: Damien Le Moal Organization: Western Digital Research In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable ARC-Authentication-Results: i=1; imf03.hostedemail.com; dkim=none ("invalid DKIM record") header.d=wdc.com header.s=dkim.wdc.com header.b="Z6yHp/nd"; dkim=pass header.d=opensource.wdc.com header.s=dkim header.b=QVLKnAqx; spf=pass (imf03.hostedemail.com: domain of "prvs=212a56102=damien.lemoal@opensource.wdc.com" designates 68.232.141.245 as permitted sender) smtp.mailfrom="prvs=212a56102=damien.lemoal@opensource.wdc.com"; dmarc=pass (policy=quarantine) header.from=opensource.wdc.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1659970344; a=rsa-sha256; cv=none; b=6++QdoSo93Po0I8UEqtXPncdbeDIJe2iFviZrE5DOz04kOdljuONMe44wfyILErVQxbWF5 V0ZimhQDfyQWwl2k/51AhX4nBnawU7WB2wtlhi/S8+GHBqTxKKfpg1HwV5LnKjaAssMq36 Z/UCnzPfvCsTvMl9it02g7spgOPwfZk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1659970344; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=6skYk8VqagcYgcR5Ze+t5a3ADAqkr3S8dQ/Q7TAg2sQ=; b=PsN1tjjidFugrlT91lLxGuSbq48Prbux0EauZewD+sTM0VOOiGvk82XkNSfcealuBeOX3D LyTfZ3Y+Q+MivJbyZM9gecZ8JWyo9YN15EDLJ9ejFkDgok85xpkIu4Arx1ZV0htYgnLY/c ebIlAeYDuhSNAzwneHr/Ttwy8/Uq9Ew= X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: D28CE2015E X-Rspam-User: Authentication-Results: imf03.hostedemail.com; dkim=none ("invalid DKIM record") header.d=wdc.com header.s=dkim.wdc.com header.b="Z6yHp/nd"; dkim=pass header.d=opensource.wdc.com header.s=dkim header.b=QVLKnAqx; spf=pass (imf03.hostedemail.com: domain of "prvs=212a56102=damien.lemoal@opensource.wdc.com" designates 68.232.141.245 as permitted sender) smtp.mailfrom="prvs=212a56102=damien.lemoal@opensource.wdc.com"; dmarc=pass (policy=quarantine) header.from=opensource.wdc.com X-Stat-Signature: c9i354o5f7kfhra6jkfmtyw9yba8ran1 X-HE-Tag: 1659970343-618611 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 2022/08/05 1:05, kernel test robot wrote: >=20 >=20 > Greeting, >=20 > FYI, we noticed a -15.0% regression of stress-ng.copy-file.ops_per_sec = due to commit: >=20 >=20 > commit: 0568e6122574dcc1aded2979cd0245038efe22b6 ("ata: libata-scsi: ca= p ata_device->max_sectors according to shost->max_sectors") > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master >=20 > in testcase: stress-ng > on test machine: 96 threads 2 sockets Ice Lake with 256G memory > with following parameters: >=20 > nr_threads: 10% > disk: 1HDD > testtime: 60s > fs: f2fs > class: filesystem > test: copy-file > cpufreq_governor: performance > ucode: 0xb000280 Without knowing what the device adapter is, hard to say where the problem= is. I suspect that with the patch applied, we may be ending up with a small def= ault max_sectors value, causing overhead due to more commands than necessary. Will check what I see with my test rig. >=20 >=20 >=20 >=20 > If you fix the issue, kindly add following tag > Reported-by: kernel test robot >=20 >=20 > Details are as below: > -----------------------------------------------------------------------= ---------------------------> >=20 >=20 > To reproduce: >=20 > git clone https://github.com/intel/lkp-tests.git > cd lkp-tests > sudo bin/lkp install job.yaml # job file is attached = in this email > bin/lkp split-job --compatible job.yaml # generate the yaml fil= e for lkp run > sudo bin/lkp run generated-yaml-file >=20 > # if come across any failure that blocks the test, > # please remove ~/.lkp and /lkp dir to run from a clean state. >=20 > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > class/compiler/cpufreq_governor/disk/fs/kconfig/nr_threads/rootfs/tbox_= group/test/testcase/testtime/ucode: > filesystem/gcc-11/performance/1HDD/f2fs/x86_64-rhel-8.3/10%/debian-11= .1-x86_64-20220510.cgz/lkp-icl-2sp1/copy-file/stress-ng/60s/0xb000280 >=20 > commit:=20 > 4cbfca5f77 ("scsi: scsi_transport_sas: cap shost opt_sectors accordin= g to DMA optimal limit") > 0568e61225 ("ata: libata-scsi: cap ata_device->max_sectors according = to shost->max_sectors") >=20 > 4cbfca5f7750520f 0568e6122574dcc1aded2979cd0=20 > ---------------- ---------------------------=20 > %stddev %change %stddev > \ | \ =20 > 1627 -14.9% 1385 stress-ng.copy-file.ops > 27.01 -15.0% 22.96 stress-ng.copy-file.ops_p= er_sec > 8935079 -11.9% 7870629 stress-ng.time.file_syste= m_outputs > 14.88 =C2=B1 5% -31.8% 10.14 =C2=B1 3% stress-ng.time.= percent_of_cpu_this_job_got > 50912 -14.7% 43413 vmstat.io.bo > 93.78 +1.4% 95.10 iostat.cpu.idle > 3.89 -31.6% 2.66 iostat.cpu.iowait > 4.01 -1.3 2.74 mpstat.cpu.all.iowait% > 0.23 =C2=B1 9% -0.1 0.17 =C2=B1 11% mpstat.cpu.all.= sys% > 1.66 =C2=B1 37% -1.2 0.51 =C2=B1 55% perf-profile.ca= lltrace.cycles-pp.f2fs_write_end.generic_perform_write.f2fs_buffered_writ= e_iter.f2fs_file_write_iter.do_iter_readv_writev > 1.66 =C2=B1 37% -1.1 0.59 =C2=B1 25% perf-profile.ch= ildren.cycles-pp.f2fs_write_end > 1.51 =C2=B1 40% -1.1 0.45 =C2=B1 26% perf-profile.ch= ildren.cycles-pp.f2fs_dirty_data_folio > 1.21 =C2=B1 49% -1.0 0.23 =C2=B1 33% perf-profile.ch= ildren.cycles-pp.f2fs_update_dirty_folio > 0.88 =C2=B1 56% -0.8 0.04 =C2=B1111% perf-profile.ch= ildren.cycles-pp.native_queued_spin_lock_slowpath > 0.14 =C2=B1 26% +0.1 0.25 =C2=B1 28% perf-profile.ch= ildren.cycles-pp.page_cache_ra_unbounded > 0.88 =C2=B1 56% -0.8 0.04 =C2=B1112% perf-profile.se= lf.cycles-pp.native_queued_spin_lock_slowpath > 3164876 =C2=B1 9% -20.2% 2524713 =C2=B1 7% perf-stat.i.cac= he-misses > 4.087e+08 -4.6% 3.899e+08 perf-stat.i.dTLB-loads > 313050 =C2=B1 10% -18.4% 255410 =C2=B1 6% perf-stat.i.nod= e-loads > 972573 =C2=B1 9% -16.4% 812873 =C2=B1 6% perf-stat.i.nod= e-stores > 3114748 =C2=B1 9% -20.2% 2484807 =C2=B1 7% perf-stat.ps.ca= che-misses > 4.022e+08 -4.6% 3.837e+08 perf-stat.ps.dTLB-loads > 308178 =C2=B1 10% -18.4% 251418 =C2=B1 6% perf-stat.ps.no= de-loads > 956996 =C2=B1 9% -16.4% 799948 =C2=B1 6% perf-stat.ps.no= de-stores > 358486 -8.3% 328694 proc-vmstat.nr_active_fil= e > 1121620 -11.9% 987816 proc-vmstat.nr_dirtied > 179906 -6.7% 167912 proc-vmstat.nr_dirty > 1151201 -1.7% 1131322 proc-vmstat.nr_file_pages > 100181 +9.9% 110078 =C2=B1 2% proc-vmstat.nr_inact= ive_file > 846362 -14.6% 722471 proc-vmstat.nr_written > 358486 -8.3% 328694 proc-vmstat.nr_zone_activ= e_file > 100181 +9.9% 110078 =C2=B1 2% proc-vmstat.nr_zone_= inactive_file > 180668 -6.8% 168456 proc-vmstat.nr_zone_write= _pending > 556469 -3.5% 536985 proc-vmstat.pgactivate > 3385454 -14.6% 2889953 proc-vmstat.pgpgout >=20 >=20 >=20 >=20 > Disclaimer: > Results have been estimated based on internal Intel analysis and are pr= ovided > for informational purposes only. Any difference in system hardware or s= oftware > design or configuration may affect actual performance. >=20 >=20 --=20 Damien Le Moal Western Digital Research