Tuning Gigabit

[Craig Reyenga]

From: "David Gilbert" <dgilbert at velocet.ca>
> >>>>> "Ivan" == Ivan Voras <ivoras at fer.hr> writes:
>
> >> Message: 5 Date: Sat, 28 Jun 2003 13:43:46 +0200 From: "Simon
> >> L. Nielsen" <simon at nitro.dk> Subject: Re: Tuning Ggiabit
> >> Message-ID: <20030628114342.GB401 at 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 at velocet.net             |  equal if and only if they
|
> |http://daveg.ca                              |   are precisely opposite.
|
>
=========================================================GLO================