Re: Tuning Gigabit

From: Craig Reyenga (craig_at_craig.afraid.org)
Date: 06/29/03

  • Next message: Gregory Sutter: "Re: Tuning Gigabit" 
    To: "David Gilbert" <dgilbert@velocet.ca>
Date: Sat, 28 Jun 2003 16:57:45 -0700

    From: "David Gilbert" <dgilbert@velocet.ca>
    > >>>>> "Ivan" == Ivan Voras <ivoras@fer.hr> writes:
    >
    > >> Message: 5 Date: Sat, 28 Jun 2003 13:43:46 +0200 From: "Simon
    > >> L. Nielsen" <simon@nitro.dk> Subject: Re: Tuning Ggiabit
    > >> Message-ID: <20030628114342.GB401@nitro.dk> Content-Type:
    > >> text/plain; charset="us-ascii"
    >
    > >>> I've been trying to get my gigabit link to run as fast as
    > >>> possible, but I have run out of ideas. I've documented (though not
    > >>> very well) what I have done thus far:
    > >>>
    > >>> http://craig.afraid.org/a/b?page=computer/gigabit
    > >>>
    > >>> If there is any more I can do besides what I have already done, I
    > >>> would love to hear it. Please avoid suggestions that require
    > >>> spending money.
    >
    > Ivan> This is probably an obsolete suggestion, but have you increased
    > Ivan> HZ when you turned on NIC polling? (the web page doesn't mention
    > Ivan> it)
    >
    > Unfortunately you may have a motherboard that maxes at 300 megabit.
    > Our recent testing of Gigabit NICs found more than 75% of the
    > motherboards we tried unable to pass more than 500 megabit and 25% of
    > the motherboards wouldn't pass more than 100 megabit.
    >
    > 300 megabit is about where 32bit 33Mhz PCI maxes out.
    >
    > Dave.
    >
    > --

    Could you tell me a little more about your tests? What boards, and what
    configuration?

    -Craig

    >
    ============================================================================
    > |David Gilbert, Velocet Communications. | Two things can only be
    |
    > |Mail: dgilbert@velocet.net | equal if and only if they
    |
    > |http://daveg.ca | are precisely opposite.
    |
    >
    =========================================================GLO================

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