From owner-freebsd-current@FreeBSD.ORG Mon Nov 20 22:45:53 2006 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 0B0FD16A412; Mon, 20 Nov 2006 22:45:53 +0000 (UTC) (envelope-from pjd@garage.freebsd.pl) Received: from mail.garage.freebsd.pl (arm132.internetdsl.tpnet.pl [83.17.198.132]) by mx1.FreeBSD.org (Postfix) with ESMTP id 35BB043D68; Mon, 20 Nov 2006 22:45:24 +0000 (GMT) (envelope-from pjd@garage.freebsd.pl) Received: by mail.garage.freebsd.pl (Postfix, from userid 65534) id 3066D45684; Mon, 20 Nov 2006 23:45:42 +0100 (CET) Received: from localhost (dma35.neoplus.adsl.tpnet.pl [83.24.56.35]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.garage.freebsd.pl (Postfix) with ESMTP id D0CF345681; Mon, 20 Nov 2006 23:45:36 +0100 (CET) Date: Mon, 20 Nov 2006 23:45:32 +0100 From: Pawel Jakub Dawidek To: Attilio Rao Message-ID: <20061120224532.GA232@garage.freebsd.pl> References: <3bbf2fe10610181518k68356528i154267c0bd1b1a77@mail.gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="IS0zKkzwUGydFO0o" Content-Disposition: inline In-Reply-To: <3bbf2fe10610181518k68356528i154267c0bd1b1a77@mail.gmail.com> X-PGP-Key-URL: http://people.freebsd.org/~pjd/pjd.asc X-OS: FreeBSD 7.0-CURRENT i386 User-Agent: mutt-ng/devel-r804 (FreeBSD) X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on mail.garage.freebsd.pl X-Spam-Level: X-Spam-Status: No, score=-0.5 required=3.0 tests=BAYES_00,RCVD_IN_NJABL_DUL, RCVD_IN_SORBS_DUL autolearn=no version=3.0.4 Cc: pho@freebsd.org, freebsd-current@freebsd.org, Robert Watson , freebsd-arch@freebsd.org Subject: Re: sx locks rewriting - needs testers X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Nov 2006 22:45:53 -0000 --IS0zKkzwUGydFO0o Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Oct 19, 2006 at 12:18:16AM +0200, Attilio Rao wrote: > In my P4 branch: //depot/user/attilio/attilio_smpng/... > you can find a sx locks rewriting using the optimized semantic of > rwlocks; in the end this might result in a valuable performance > improvement. I'm using sx(9) locks for Solaris mutexes and rwlocks, as I need locks for ZFS that I can sleep while holding. =46rom my simple tests your locks are stable and ZFS is 10% faster. Nice work. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --IS0zKkzwUGydFO0o Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (FreeBSD) iD8DBQFFYjAMForvXbEpPzQRAlHrAJ4qFZjGYWtc4//lZfylAYr3MUhNaQCbBG98 mIB6AXZ6rdipJyeonJ6bT/g= =4XU7 -----END PGP SIGNATURE----- --IS0zKkzwUGydFO0o--