Re: Tuning Gigabit

From: David Gilbert (dgilbert_at_velocet.ca)
Date: 06/29/03

  • Next message: Craig Reyenga: "Re: Tuning Gigabit" 
    Date: Sat, 28 Jun 2003 19:35:41 -0400
To: "Ivan Voras" <ivoras@fer.hr>

    >>>>> "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. 

    -- 
============================================================================
|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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  • Next message: Craig Reyenga: "Re: Tuning Gigabit"