From owner-svn-src-stable-7@FreeBSD.ORG  Fri Jan 15 23:54:14 2010
Return-Path: <owner-svn-src-stable-7@FreeBSD.ORG>
Delivered-To: svn-src-stable-7@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 8AB33106566B;
	Fri, 15 Jan 2010 23:54:14 +0000 (UTC) (envelope-from mav@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 78CF98FC14;
	Fri, 15 Jan 2010 23:54:14 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id o0FNsEwA027211;
	Fri, 15 Jan 2010 23:54:14 GMT (envelope-from mav@svn.freebsd.org)
Received: (from mav@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id o0FNsEkI027209;
	Fri, 15 Jan 2010 23:54:14 GMT (envelope-from mav@svn.freebsd.org)
Message-Id: <201001152354.o0FNsEkI027209@svn.freebsd.org>
From: Alexander Motin <mav@FreeBSD.org>
Date: Fri, 15 Jan 2010 23:54:14 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org
X-SVN-Group: stable-7
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r202426 - stable/7/sbin/geom/class/stripe
X-BeenThere: svn-src-stable-7@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SVN commit messages for only the 7-stable src tree
	<svn-src-stable-7.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-stable-7>, 
	<mailto:svn-src-stable-7-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-stable-7>
List-Post: <mailto:svn-src-stable-7@freebsd.org>
List-Help: <mailto:svn-src-stable-7-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-stable-7>, 
	<mailto:svn-src-stable-7-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 15 Jan 2010 23:54:14 -0000

Author: mav
Date: Fri Jan 15 23:54:14 2010
New Revision: 202426
URL: http://svn.freebsd.org/changeset/base/202426

Log:
  MFC r201658:
  Increase default block size from 4K to 64K. It was reduces 6 yeard ago,
  when trees were big and FAST mode was enabled by default.
  
  So small block size doesn't benefits linear I/O operations in FAST and
  significantly slowdowns in ECONOMIC (default) mode. For single stream random
  I/Os so small block doesn't give much benefits, as access time is usually
  bigger then transfer time there. Same time it requires all heads to seek
  together for every single request, reducing performance on parallel load.

Modified:
  stable/7/sbin/geom/class/stripe/geom_stripe.c
Directory Properties:
  stable/7/sbin/geom/class/stripe/   (props changed)

Modified: stable/7/sbin/geom/class/stripe/geom_stripe.c
==============================================================================
--- stable/7/sbin/geom/class/stripe/geom_stripe.c	Fri Jan 15 23:52:31 2010	(r202425)
+++ stable/7/sbin/geom/class/stripe/geom_stripe.c	Fri Jan 15 23:54:14 2010	(r202426)
@@ -46,7 +46,7 @@ __FBSDID("$FreeBSD$");
 uint32_t lib_version = G_LIB_VERSION;
 uint32_t version = G_STRIPE_VERSION;
 
-static intmax_t default_stripesize = 4096;
+static intmax_t default_stripesize = 65536;
 
 static void stripe_main(struct gctl_req *req, unsigned flags);
 static void stripe_clear(struct gctl_req *req);