From owner-freebsd-arch@FreeBSD.ORG Sat Sep 4 20:56:56 2004 Return-Path: Delivered-To: freebsd-arch@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3EEB916A4E3 for ; Sat, 4 Sep 2004 20:56:56 +0000 (GMT) Received: from cello.qnet.com (cello.qnet.com [209.221.193.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id 159C843D31 for ; Sat, 4 Sep 2004 20:56:56 +0000 (GMT) (envelope-from stork@qnet.com) Received: from heredity2000p (66-42-105-180.lsan.dial.qnet.com [66.42.105.180]) by cello.qnet.com (8.12.10/8.12.10) with ESMTP id i84Kudsk021327 for ; Sat, 4 Sep 2004 13:56:44 -0700 (PDT) Message-Id: <200409042056.i84Kudsk021327@cello.qnet.com> From: "Paul Smith" To: Date: Sat, 4 Sep 2004 14:01:09 -0700 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_NextPart_000_0003_01C49287.ABCDFBA0" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: AcSSVLy/ZEQoF6OvSxyx9HpmdN8Kjw== X-MS-TNEF-Correlator: 0000000083EA75694EBEE6479FD17653560C4E6EA4642200 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 X-Content-Filtered-By: Mailman/MimeDel 2.1.1 Subject: Microkernel Performance: FreeBSD versus Darwin X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 04 Sep 2004 20:56:56 -0000 This is a multi-part message in MIME format. ------=_NextPart_000_0003_01C49287.ABCDFBA0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit Theoretically the microkernel of Darwin should create overheads harming the performance. Has anybody seen an actual study comparing the performance of Darwin and FreeBSD? DEC's Tru64UNIX used a microkernel, but the Alpha hardware was so superior for its time that any loss of performance could have gone unnoticed. Similarly Tera runs on supercomputers that can absorb a little extra overhead. Does anybody know of any serious benefit arising from the microkernel? Or is Darwin simply Steve Jobs' passion to bring back NeXT? Paul Smith semenbank@yahoo.com --- Outgoing mail is certified Virus Checked. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.749 / Virus Database: 501 - Release Date: 9/1/2004 ------=_NextPart_000_0003_01C49287.ABCDFBA0--