From owner-freebsd-performance@FreeBSD.ORG Fri Apr 11 12:13:54 2008 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2E90D1065684 for ; Fri, 11 Apr 2008 12:13:54 +0000 (UTC) (envelope-from gofp-freebsd-performance@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id D5F988FC20 for ; Fri, 11 Apr 2008 12:13:53 +0000 (UTC) (envelope-from gofp-freebsd-performance@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1JkI8d-0003zU-II for freebsd-performance@freebsd.org; Fri, 11 Apr 2008 12:13:51 +0000 Received: from lara.cc.fer.hr ([161.53.72.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 11 Apr 2008 12:13:51 +0000 Received: from ivoras by lara.cc.fer.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 11 Apr 2008 12:13:51 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-performance@freebsd.org From: Ivan Voras Date: Fri, 11 Apr 2008 14:13:40 +0200 Lines: 30 Message-ID: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigA84F86C7D5D2D45D32635D2E" X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: lara.cc.fer.hr User-Agent: Thunderbird 2.0.0.12 (X11/20080227) X-Enigmail-Version: 0.95.0 Sender: news Subject: IO Scheduling X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Apr 2008 12:13:54 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigA84F86C7D5D2D45D32635D2E Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable I found an interesting post: http://thread.gmane.org/gmane.comp.db.postgresql.performance/15979 By itself the post doesn't say anything specific, except that apparently great improvements can be gained on some loads with different IO scheduling policies on Linux. It's maybe something to take into account when comparing performance to Linux. --------------enigA84F86C7D5D2D45D32635D2E Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFH/1X1ldnAQVacBcgRAh0BAJ0Rf7alXuFFr9rOtglb/FN9EPkY8gCfUaYU tF0riw315CQgcZZXP1ezd6w= =cpiE -----END PGP SIGNATURE----- --------------enigA84F86C7D5D2D45D32635D2E--