>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.
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