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gigabit ethernet tests (fwd)


===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
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---------- Forwarded message ----------
Date: Mon, 9 Oct 2000 17:50:02 -0600
From: Mike Schmidt <address@hidden>
To: address@hidden
Subject: gigabit ethernet tests

Between daffy (linux) and shemp (solaris x86) on our local switch, we can
sustain packet speeds in excess of 300Mbps -- not what I'd hoped, but at
least three times fast ethernet speeds.  Between daffy and/or shemp and
our fair motherlode, a lousy 80Mbps which is no faster than what we were
getting already.  This might be due to packet filtering speed limits on
the routers.

Note - raw TCP throughput shows the Solaris x86 TCP stack and/or hardware
       drivers to be slower than Solaris SPARC or Linux by a fair margin.

mike