From owner-freebsd-fs@freebsd.org Sat Dec 9 21:58:53 2017 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 8D8A3E99D15 for ; Sat, 9 Dec 2017 21:58:53 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 7A7927769B for ; Sat, 9 Dec 2017 21:58:53 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id vB9LwqLl010604 for ; Sat, 9 Dec 2017 21:58:53 GMT (envelope-from bugzilla-noreply@freebsd.org) 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... Date: Sat, 09 Dec 2017 21:58:53 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: regression X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: cy@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-fs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 09 Dec 2017 21:58:53 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D224080 --- Comment #30 from Cy Schubert --- With r326347 removed and kern_size, kern_size_max and arc_max tunables remo= ved from loader.conf: Laptop w 8 GB with two processes each of tar of /usr/src and /usr/obj and buildworld/buildkernel -DNO_CLEAN and firefox: CPU: 2.7% user, 95.0% nice, 2.1% system, 0.1% interrupt, 0.0% idle Mem: 617M Active, 67M Inact, 204M Laundry, 6505M Wired, 144M Buf, 369M Free ARC: 4879M Total, 1830M MFU, 2630M MRU, 21M Anon, 54M Header, 343M Other 3983M Compressed, 10G Uncompressed, 2.69:1 Ratio Swap: 12G Total, 382M Used, 12G Free, 3% Inuse, 128K In slippy$ sysctl vm.kmem_size=20=20=20=20 vm.kmem_size: 8138752000 slippy$ sysctl vm.kmem_size_max vm.kmem_size_max: 1319413950874 slippy$ sysctl hw.physmem hw.physmem: 8365899776 slippy$ sysctl vfs.zfs.arc_max=20 vfs.zfs.arc_max: 7065010176 slippy$=20 Server machine in basement with 8 GB also running two processes each of tar= of /usr/src and /usr/obj and buildworld/buildkernel -DNO_CLEAN, no firefox: CPU: 0.0% user, 97.0% nice, 2.6% system, 0.4% interrupt, 0.0% idle Mem: 257M Active, 246M Inact, 36K Laundry, 6690M Wired, 110M Buf, 746M Free ARC: 5153M Total, 1262M MFU, 3472M MRU, 20M Anon, 53M Header, 346M Other 4364M Compressed, 11G Uncompressed, 2.51:1 Ratio Swap: 20G Total, 95M Used, 20G Free cwsys$ sysctl vm.kmem_size=20=20=20=20 vm.kmem_size: 8325844992 cwsys$ sysctl vm.kmem_size_max vm.kmem_size_max: 1319413950874 cwsys$ sysctl hw.physmem hw.physmem: 8566390784 cwsys$ sysctl vfs.zfs.arc_max=20=20 vfs.zfs.arc_max: 7252103168 cwsys$=20 This is also with additional patch discussed in comment #26 removed. --=20 You are receiving this mail because: You are the assignee for the bug.=