From owner-freebsd-fs@freebsd.org Sun Oct 1 14:59:30 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 A7475E26AD3 for ; Sun, 1 Oct 2017 14:59:30 +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 962DF383A for ; Sun, 1 Oct 2017 14:59:30 +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 v91ExUja080444 for ; Sun, 1 Oct 2017 14:59:30 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-fs@FreeBSD.org Subject: [Bug 222377] ZFS ABD wasteful... Date: Sun, 01 Oct 2017 14:59:30 +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: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: commit-hook@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: 2.1.23 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 01 Oct 2017 14:59:30 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222377 --- Comment #4 from commit-hook@freebsd.org --- A commit references this bug: Author: avg Date: Sun Oct 1 14:58:44 UTC 2017 New revision: 324160 URL: https://svnweb.freebsd.org/changeset/base/324160 Log: MFC r323797: add vfs_zfs.abd_chunk_size tunable It is reported that the default value of 4KB results in a substantial memory use overhead (at least, on some configurations). Using 1KB seems to reduce the overhead significantly. PR: 222377 Changes: _U stable/11/ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/abd.c --=20 You are receiving this mail because: You are the assignee for the bug.=