Date: Tue, 4 Nov 1997 15:39:29 -0500 (EST) From: Charles Henrich <henrich@crh.cl.msu.edu> To: Don.Lewis@tsc.tdk.com, freebsd-hackers@freebsd.org Subject: Re: de0 errors Message-ID: <199711042039.PAA00426@crh.cl.msu.edu> References: <63lrjc$491$1@msunews.cl.msu.edu>
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>Bingo! I believe that a 21140 based NIC is bad juju in a system with a
>440FX based system because the 21140 can only do plain PCI memory reads
>(MR) and you really need to use PCI read multiple commands (MRM) to get
>decent throughput with this chipset, and probably any other Pentium Pro
>or Pentium II chipset. A 21140A based NIC should work much better since
>it can use the MRM command.
Humm...
>} Humm, tcpblast shows 4.0MB/sec. Granted this isnt an empty net either,
>} fairly busy I would imagine.
>That's probably a reasonable number for a 10Mb network, but not a
>100Mb network. BTW, I bet this NIC is also hurting your disk I/O
>throughput since it is hogging the PCI bus because it's using an
>inefficient transfer method.
Um, a 10Mb network cannot sustain 4.0MB/sec :)
-Crh
--
Charles Henrich Michigan State University henrich@msu.edu
http://pilot.msu.edu/~henrich
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