Date: Sun, 16 Jan 2000 10:14:48 -0800 From: David Greenman <dg@root.com> To: Achim Patzner <ap@bnc.net> Cc: current@FreeBSD.ORG Subject: Re: Current, XEON and MP performance Message-ID: <200001161814.KAA05686@implode.root.com> In-Reply-To: Your message of "Sun, 16 Jan 2000 10:39:35 %2B0100." <20000116103935.A9402@bnc.net>
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>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
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