[net.dcom] ethernet performance

honey@down.FUN (code 101) (03/17/85)

Synopsizing kroot's data, and adding a third column:

buffer	  kbytes/sec	writes/sec
1k - 2k	  50 - 100	25 - 100
10	  10 - 20	1k - 2k
1	  .06 - .09	60 - 90

The big surprise is not the shabby throughput with one byte writes, but
the incredible performance with ten byte writes.  This seems suspect.

	Peter

tim@cmu-cs-k.ARPA (Tim Maroney) (03/24/85)

Writing your own protocol depends on the application.  I believe you said
you wanted extremely small packets.  If the size is likely to be four bytes
of data or less, then just send duplicates in every packet.  If it is going
to be more, use a simple checksum from IP.  As for hacking the device
drivers for the network, that shouldn't be hard for any kernel hacker.
-=-
Tim Maroney, Carnegie-Mellon University, Networking
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