I'm observing really bad TCP performance in Linux 2.2.x <-> Linux 2.2.x
interaction:
We have a switched 100Mbit network of identical PII 266 boxes equipped
with eepro100+ cards and the problem is as follows:
ttcp: 2.0.32 <-> 2.0.32 10Mb/s
ttcp: 2.2.2 <-> 2.0.32 10Mb/s
ttcp: 2.2.2 <-> 2.2.2 400Kb/s - in this case lots of frame errors
are produced (~ 1 error/packet)
Version of eepro100 doesn't matter much - fixing eepro100-0.99B to work
with 2.2.2 (which has eepro100-1.06) produces the same results.
Changing sockbufsize doesn't help a lot. ( +- 100k/s)
Other tcp based programs behave the same way.
UDP performance is around 11Mb/s in each case
These effects are 100% reproducible so I can probably debug the
situation if someone points me in right direction :)
Regards, Alexander.
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