Date: Thu, 07 Dec 2017 08:39:15 +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-gLrJVhKhRC@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 #16 from Cy Schubert <cy@FreeBSD.org> --- I've done some testing with r326347 reverted and with r326346 + r326347 reverted. My test included I/O intensive operations including buildworld/buildkernel -DNO_CLEAN and parallel rsync. Removing r326346 + r326347 showed no significant improvement over removal of only r326347 (bel= ow). r326347 definitely caused the issue. Note MFU. Performance is significantly better due to improved ARC caching. last pid: 2156; load averages: 2.56, 2.32, 1.66 up 0+00:25:52 00:3= 2:57 89 processes: 4 running, 85 sleeping CPU: 1.3% user, 75.8% nice, 20.5% system, 0.8% interrupt, 1.7% idle Mem: 390M Active, 602M Inact, 5631M Wired, 63M Buf, 1317M Free ARC: 3585M Total, 1106M MFU, 2029M MRU, 14M Anon, 60M Header, 376M Other 2734M Compressed, 6084M Uncompressed, 2.23:1 Ratio Swap: 20G Total, 20G Free PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU CO= MMAN 63633 root 1 52 0 36720K 27164K RUN 1 2:28 7.38% pkg 2136 root 1 4 10 10548K 1932K select 0 0:00 6.32% ma= ke 1909 root 1 4 10 11808K 3144K select 1 0:00 0.36% ma= ke 2096 root 1 24 0 13804K 3952K CPU1 1 0:00 0.11% top 2135 root 1 52 10 11700K 3124K wait 1 0:00 0.11% sh 3598 root 1 20 0 14312K 5216K select 0 0:02 0.10% sc= reen 98994 root 1 4 10 28516K 20320K select 1 0:01 0.10% ma= ke 1828 root 1 52 10 10404K 1608K select 1 0:00 0.07% ma= ke 61839 root 1 30 10 10196K 1324K select 1 0:00 0.05% ma= ke 1906 root 1 4 10 10360K 1468K select 1 0:00 0.05% ma= ke 98907 root 1 30 10 10980K 2340K select 1 0:00 0.04% ma= ke 99013 root 1 30 10 23784K 15508K select 1 0:00 0.04% ma= ke 2712 root 1 20 0 14352K 5624K select 1 0:00 0.02% de= vd 3137 root 1 20 0 10860K 2456K select 0 0:00 0.01% po= werd --=20 You are receiving this mail because: You are the assignee for the bug.=
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