Re: Ideas !!

Rick Jones (
Tue, 13 Oct 1998 12:33:22 -0700


Please, please, please :) start doing word-wrap at 72 columns.

> Anyone with ideas, I'll appreciate !! The outputs are show below.
> Martin.
> > netperf -p 5400 -H -t UDP_STREAM -- -m 1472
> Socket Message Elapsed Messages
> Size Size Time Okay Errors Throughput
> bytes bytes secs # # 10^6bits/sec
> 8192 1472 10.00 79891 0 94.11
> 8192 10.00 102 0.12

There is a very little bit about this in the manual, upon which I will
expand here.

UDP is an unreliable protocol, and the netperf UDP_STREAM test does not
attempt to add any reliability. The test is also very dependent on
outbound transmit queue overflows being reported with an ENOBUFs - on
systems where this does not happen, it is possible for netperf to report
greater than link rate sending numbers.

It is probable that packets were lost somewhere - check the netstat
stats on both ends - look for driver and UDP socket overflow stats.


these opinions are mine, all mine; HP might not want them anyway... :)
feel free to email, or post, but please do not do both...
my email address is raj in the domain...