From owner-freebsd-bugs@freebsd.org Mon May 28 07:28:52 2018 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id CBAA2F6E82C for ; Mon, 28 May 2018 07:28:51 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 5FC7180975 for ; Mon, 28 May 2018 07:28:51 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 20466F6E82B; Mon, 28 May 2018 07:28:51 +0000 (UTC) Delivered-To: bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0EA34F6E829 for ; Mon, 28 May 2018 07:28:51 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 9B85280973 for ; Mon, 28 May 2018 07:28:50 +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 mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id E5D37197CD for ; Mon, 28 May 2018 07:28:49 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id w4S7Snc6068109 for ; Mon, 28 May 2018 07:28:49 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w4S7Sn3l068108 for bugs@FreeBSD.org; Mon, 28 May 2018 07:28:49 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 228557] 11.3-BETA3 excessive swapping (swap on zvol) Date: Mon, 28 May 2018 07:28:49 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.1-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: pascal.guitierrez@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: 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-bugs@freebsd.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 28 May 2018 07:28:52 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D228557 Bug ID: 228557 Summary: 11.3-BETA3 excessive swapping (swap on zvol) Product: Base System Version: 11.1-STABLE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: pascal.guitierrez@gmail.com Since upgrading from 11.1-RELEASE p10 to 11.2-BETA3 on amd64 we are seeing excessive swapping, even when the system is idle. Swap is on zvol, with system constantly swapping in/out for no apparent rea= son. There is no load on the system: 5:22PM up 1 day, 7 mins, 1 user, load averages: 0.06, 0.20, 0.18 However the following lines from top confirm that excessive swapping is occurring: Swap: 4096M Total, 158M Used, 3938M Free, 3% Inuse, 448K In, 136K Out Swap: 4096M Total, 156M Used, 3940M Free, 3% Inuse, 8K In, 44K Out Swap: 4096M Total, 157M Used, 3939M Free, 3% Inuse, 332K In, 24K Out etc.... System has 64GB of RAM, 8-core Xeon E5-2620 v4 CPU, all memory and ZFS tuna= bles are at defaults. ZFS settings that were changed on swap zvol are: volblocksize 4K sync always compression off The following process seems to constantly active: pagedaemon{laundry: dom0} Did not exhibit this behaviour on 11.1-RELEASE with exactly the same configuration. --=20 You are receiving this mail because: You are the assignee for the bug.=