Hamachi hardware checksum support

Ted Matsumura tedm@packetengines.com
Wed Mar 10 19:45:23 1999


Pete,
  Thanks for the prompt reply, what CPU and processor speeds, motherboard
type?

Were those the optimal parameters?  Did you try 64K or 128K nbuf and buflen
sizes?  Thanks.

Ted

-----Original Message-----
From: pw@dancer.ca.sandia.gov [mailto:pw@dancer.ca.sandia.gov]
Sent: Wednesday, March 10, 1999 4:27 PM
To: tedm@packetengines.com
Cc: yellowfin@beowulf.gsfc.nasa.gov
Subject: Re: Hamachi hardware checksum support


I used a slightly modified ttcp (you can guess what the params mean):

    su2cn4# ../tcp/nttcp2 -t -n 16384 -l 16384 -w 64 10.2.2.3
    ttcp-t: buflen=16384, nbuf=16384, align=16384/0, port=5001,
sockbufsize=65536  tcp  -> 10.2.2.3

No module parameters, so default IntrCtrl values (from the code):

    writel(0x00080000, ioaddr + TxIntrCtrl);
    writel(0x00000020, ioaddr + RxIntrCtrl);

    -- Pete

Ted says:
> What were you using for sender and receiver and command line parameters to
> get the 16% boost?  Thanks.
---------------------------------------------
Pete Wyckoff          | wyckoff@ca.sandia.gov
Sandia National Labs  | 925 294 3503 (voice)
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