Date: Thu, 07 Dec 2017 05:14:32 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-fs@FreeBSD.org Subject: [Bug 224080] ZFS: "arc_dnlc_evicts_thr" + "arc_reclaim_thread" - high CPU load during poudriere build... Message-ID: <bug-224080-3630-nuuAmIY2Pk@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-224080-3630@https.bugs.freebsd.org/bugzilla/> References: <bug-224080-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D224080 --- Comment #9 from Cy Schubert <cy@FreeBSD.org> --- I can confirm that reverting r326347 resolves the issue. My zpools no longer thrash. Performance, due to greatly reduced I/O, has vastly improved. So far so good: last pid: 64954; load averages: 1.87, 1.86, 2.05 up 0+00:58:45=20 21:12:59 71 processes: 3 running, 68 sleeping CPU: 0.0% user, 64.0% nice, 33.3% system, 0.2% interrupt, 2.6% idle Mem: 1285M Active, 1367M Inact, 4489M Wired, 650M Buf, 800M Free ARC: 1997M Total, 356M MFU, 1313M MRU, 8244K Anon, 23M Header, 298M Other 1302M Compressed, 3372M Uncompressed, 2.59:1 Ratio Swap: 20G Total, 20G Free PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU CO= MMAN 64687 root 1 52 10 10604K 1996K select 1 0:00 1.63% ma= ke 60776 root 1 52 10 14460K 6092K select 1 0:00 0.41% ma= ke 33699 root 1 20 0 14312K 5308K select 0 0:00 0.22% sc= reen 60761 root 1 46 10 10984K 2520K select 1 0:00 0.14% ma= ke 61698 root 1 20 0 13920K 4124K CPU1 1 0:00 0.11% top 33888 root 1 30 10 10196K 1500K select 0 0:00 0.11% ma= ke 64686 root 1 52 10 11692K 3180K wait 0 0:00 0.11% sh 33914 root 1 30 10 10996K 2520K select 0 0:00 0.10% ma= ke 2712 root 1 20 0 14352K 5624K select 1 0:00 0.02% de= vd 3166 uucp 1 20 0 12288K 3856K nanslp 1 0:00 0.01% up= smon 3127 root 1 20 0 10860K 2456K select 0 0:00 0.01% po= werd 3124 root 2 20 0 19264K 19396K select 1 0:00 0.01% nt= pd 2795 root 1 20 0 11400K 2616K select 0 0:00 0.01% sy= slog 3358 root 1 20 0 15748K 6640K select 1 0:00 0.00% se= ndma And a different machine: last pid: 81498; load averages: 1.86, 1.88, 2.04 up 0+00:59:45 21:1= 3:59 62 processes: 2 running, 60 sleeping CPU: 0.4% user, 13.9% nice, 19.4% system, 0.6% interrupt, 65.7% idle Mem: 1291M Active, 1381M Inact, 4490M Wired, 650M Buf, 778M Free ARC: 2031M Total, 349M MFU, 1331M MRU, 8254K Anon, 24M Header, 319M Other 1313M Compressed, 3410M Uncompressed, 2.60:1 Ratio Swap: 20G Total, 20G Free PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU CO= MMAN 81192 root 1 83 10 19976K 11788K CPU1 1 0:00 5.95% ma= ke 33699 root 1 20 0 14312K 5308K select 1 0:01 0.37% sc= reen 33888 root 1 30 10 10196K 1500K select 0 0:00 0.29% ma= ke 81169 root 1 52 10 14320K 5936K select 0 0:00 0.22% ma= ke 33914 root 1 30 10 11016K 2524K select 0 0:00 0.16% ma= ke 61698 root 1 20 0 13920K 4124K CPU0 0 0:00 0.10% top 2712 root 1 20 0 14352K 5624K select 0 0:00 0.02% de= vd 3127 root 1 20 0 10860K 2456K select 1 0:00 0.01% po= werd 3166 uucp 1 20 0 12288K 3856K nanslp 1 0:00 0.01% up= smon 3124 root 2 20 0 19264K 19396K select 0 0:00 0.01% nt= pd 2795 root 1 20 0 11400K 2616K select 0 0:00 0.01% sy= slog 3358 root 1 20 0 15748K 6640K select 0 0:00 0.00% se= ndma 25899 root 1 20 0 12876K 3684K select 0 0:00 0.00% kl= ogin 33698 root 1 20 0 12392K 3648K pause 1 0:00 0.00% sc= reen --=20 You are receiving this mail because: You are the assignee for the bug.=
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