Re: Tuning Gigabit

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

  • Next message: David Gilbert: "Re: Tuning Gigabit" 
    Date: Sun, 29 Jun 2003 11:51:38 -0400
To: Craig Reyenga <craig@craig.afraid.org>

    >>>>> "Craig" == Craig Reyenga <craig@craig.afraid.org> writes:

    >> Now some boards I've tested (like the nvidia chipset) are strangely
    >> limited to 100megabit. I can't explain this. It seems low no
    >> matter how you cut it.

    Craig> As I mentioned in a previous email, this is horrible. Does this
    Craig> manifest itself with disk controllers and other high-bandwidth
    Craig> devices?

    Well... I don't have any disk controllers to test, but I've verified
    this behaviour with em, bge, sk, and nge chipsets. Of these, as I've
    said before, the em shines. The bge has good performance, too ... but
    we've seen a lot of corrupted routed packets ... it has some
    interaction with some motherboard chipsets.

    Craig> I look forward to seeing a paper on this; it would certainly
    Craig> assist people in hardware purchase decisions.

    It's in the back of my mind. I don't think I'll have time for this
    BSDCon, but maybe soon thereafter. It's getting to the point where we
    should have a BSD Journal.

    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.  |
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