From owner-freebsd-current Sun Jan 16 10:15:59 2000 Delivered-To: freebsd-current@freebsd.org Received: from implode.root.com (root.com [209.102.106.178]) by hub.freebsd.org (Postfix) with ESMTP id 613C914CB5 for ; Sun, 16 Jan 2000 10:15:57 -0800 (PST) (envelope-from dg@implode.root.com) Received: from implode.root.com (localhost [127.0.0.1]) by implode.root.com (8.8.8/8.8.5) with ESMTP id KAA05686; Sun, 16 Jan 2000 10:14:48 -0800 (PST) Message-Id: <200001161814.KAA05686@implode.root.com> To: Achim Patzner Cc: current@FreeBSD.ORG Subject: Re: Current, XEON and MP performance In-reply-to: Your message of "Sun, 16 Jan 2000 10:39:35 +0100." <20000116103935.A9402@bnc.net> From: David Greenman Reply-To: dg@root.com Date: Sun, 16 Jan 2000 10:14:48 -0800 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG >I don't know where to ask first (or what to look at) so I'd like some >creative guessing by some people closer to the sources... > >Running the same programs on nearly identically configured -CURRENT kernels >on a HP NetServer LH4 (four 550 MHz PIII Xeon with 512MB Cache, supposed to >be an INTEL 450NX-based chipset) with one GB RAM and a home-grown ASUS >P2-BDS based system (two 450 MHz PIII) with 512 MB RAM I find that the >programs (running on the same input data) on the "smaller" machine tend to >take only a third of the CPU time they need on the LH4. [Worse: The LH4 >behaves like a spoilt brat when it comes to hardware, disliking the Intel >EtherExpress that came with it (generating bus mastering problems after >bringing it up), having interrupt routing problems with two DEC TULIP based >ethernet cards sharing the same IRQ and being picky just which 3C906B-TX it >gets plugged in. It's a bitch and I'd like shooting it. Oh yes - HP has been >very helpful, telling me that I was at least 10 years behind wanting to run >a BSD and that only WinNT, HP-Sux and Linux were supported on this hardware.] > >Back to the topic: Are there any reasons for these observations? If someone >liked taking a closer look at it I could provide them with access to the >machine (and its console). I ran out of clues... What about wall-clock time? -DG David Greenman Co-founder/Principal Architect, The FreeBSD Project - http://www.freebsd.org Creator of high-performance Internet servers - http://www.terasolutions.com Pave the road of life with opportunities. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message