From owner-svn-src-head@freebsd.org Sat Oct 3 11:05:59 2015 Return-Path: Delivered-To: svn-src-head@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 40FFBA0E424; Sat, 3 Oct 2015 11:05:59 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (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 31F95151E; Sat, 3 Oct 2015 11:05:59 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.70]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id t93B5xo4057250; Sat, 3 Oct 2015 11:05:59 GMT (envelope-from mav@FreeBSD.org) Received: (from mav@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id t93B5xB7057249; Sat, 3 Oct 2015 11:05:59 GMT (envelope-from mav@FreeBSD.org) Message-Id: <201510031105.t93B5xB7057249@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mav set sender to mav@FreeBSD.org using -f From: Alexander Motin Date: Sat, 3 Oct 2015 11:05:59 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r288579 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 03 Oct 2015 11:05:59 -0000 Author: mav Date: Sat Oct 3 11:05:58 2015 New Revision: 288579 URL: https://svnweb.freebsd.org/changeset/base/288579 Log: Restore original array_rd_sz semantics. Before r278702 prefetch was blocked for I/Os > 1MB, after -- >= 1MB. 1MB I/Os are used for bulk operations in CTL (XCOPY, VERIFY), and disabling prefetch for them reduced the performance. This is temporary local patch, that should be replaced when upstreamed. Discussed with: mahrens MFC after: 3 days Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c Sat Oct 3 09:47:29 2015 (r288578) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c Sat Oct 3 11:05:58 2015 (r288579) @@ -449,7 +449,7 @@ dmu_buf_hold_array_by_dnode(dnode_t *dn, } if ((flags & DMU_READ_NO_PREFETCH) == 0 && read && - length < zfetch_array_rd_sz) { + length <= zfetch_array_rd_sz) { dmu_zfetch(&dn->dn_zfetch, blkid, nblks); } rw_exit(&dn->dn_struct_rwlock);