From owner-freebsd-bugs@FreeBSD.ORG Thu May 9 21:00:00 2013 Return-Path: Delivered-To: freebsd-bugs@smarthost.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id CE5263E2 for ; Thu, 9 May 2013 21:00:00 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:1900:2254:206c::16:87]) by mx1.freebsd.org (Postfix) with ESMTP id 9B420184 for ; Thu, 9 May 2013 21:00:00 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.7/8.14.7) with ESMTP id r49L00r3034827 for ; Thu, 9 May 2013 21:00:00 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.7/8.14.7/Submit) id r49L00uS034826; Thu, 9 May 2013 21:00:00 GMT (envelope-from gnats) Resent-Date: Thu, 9 May 2013 21:00:00 GMT Resent-Message-Id: <201305092100.r49L00uS034826@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Jason Keller Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 93FCC397 for ; Thu, 9 May 2013 20:59:34 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from oldred.FreeBSD.org (oldred.freebsd.org [8.8.178.121]) by mx1.freebsd.org (Postfix) with ESMTP id 859EC17B for ; Thu, 9 May 2013 20:59:34 +0000 (UTC) Received: from oldred.FreeBSD.org ([127.0.1.6]) by oldred.FreeBSD.org (8.14.5/8.14.5) with ESMTP id r49KxXqQ077415 for ; Thu, 9 May 2013 20:59:33 GMT (envelope-from nobody@oldred.FreeBSD.org) Received: (from nobody@localhost) by oldred.FreeBSD.org (8.14.5/8.14.5/Submit) id r49KxXG3077414; Thu, 9 May 2013 20:59:33 GMT (envelope-from nobody) Message-Id: <201305092059.r49KxXG3077414@oldred.FreeBSD.org> Date: Thu, 9 May 2013 20:59:33 GMT From: Jason Keller To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Subject: misc/178467: Optimized Checksum Code for ZFS X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 May 2013 21:00:00 -0000 >Number: 178467 >Category: misc >Synopsis: Optimized Checksum Code for ZFS >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: change-request >Submitter-Id: current-users >Arrival-Date: Thu May 09 21:00:00 UTC 2013 >Closed-Date: >Last-Modified: >Originator: Jason Keller >Release: 9.1 >Organization: BBI International >Environment: FreeBSD chewy 9.1-RELEASE-p3 FreeBSD 9.1-RELEASE-p3 #0: Mon Apr 29 18:27:25 UTC 2013 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 >Description: This isn't so much a problem as it is an RFE. Basically, the SHA256 checksum code within ZFS looks like it could use a little helping hand. On my limited testing, it would appear that Solaris 11 has at least a 20-25% edge in efficiency when doing SHA256 checksumming for ZFS. IANAP, but it would be extremely nice to be able to have the same (or better) efficiency for ZFS on FreeBSD. I have not done specific testing with Fletcher4, but that also seemed to be slightly better tuned in Solaris 11 as well. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: