Messages in this thread | | | Date | Fri, 6 Nov 1998 14:56:21 +0100 (MET) | From | Leonardo Valcamonici <> | Subject | Re: Testing the GNIC-II (Hamachi) gigabit NIC |
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On 6 Nov 1998, Jes Sorensen wrote:
> >>>>> "Alan" == Alan Cox <alan@lxorguk.ukuu.org.uk> writes: > > >> to recognize that there is a 64-bit card in a 32-bit PCI slot), I'm > >> trying to do some benchmarks. The cards are in a back-to-back > >> configuration between an Alpha-533 and a PentiumII-266. > >> > >> Are there any TCP settings I can possibly tweak to improve TCP > >> performance on large file transfers ? > > Alan> The biggest thing you want to do is to use 8K packets if the > Alan> card can support it, instead of 1500 byte frames for gig-E as > Alan> 'aggregation media' > > Right, for me with the Alteon card, the performance increases from > like 28MB/sec to around 90MB/sec in a P2 400MHz 440BX (PCI 32/33)box > when going from 1500 byte frames to 9K ones. > > However, I would be interested to hear what kind of performance you > get on 1500 byte frames. >
Talking about Hamachi cards and not Alteon's, is there anyone out there who has ever succeeded in increasing MTU in the Becker's 0.07 hamachi driver ? I can only see 21MBps on TCP for back to back connections between two PentiumPro 200 Linux 2.'.34 boxes...
Cheers,
Leonardo
+==========================================================================+ | Leonardo Valcamonici | | CASPUR e-mail: valcamonici@caspur.it | | Italian Interunivesities Consortium voice : +39-6-49913857 | | for Supercomputing Applications fax : +39-6-4957083 | +==========================================================================+ | The most exciting phrase to hear in science, the one that heralds new | | discoveries, is not "Eureka!" (I found it!) but "That's funny ..." | | -- Isaac Asimov | +==========================================================================+
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