Sporadic low network performance

Ed Wilts, RHCE ewilts at ewilts.org
Mon Jan 3 23:06:54 UTC 2005


On 01/03/2005 04:30 PM, redhat-list at demner.com wrote:
> I'm running RHEL ES (kernel version 2.4.21-27.0.1.ELsmp), and have
> sporadic network problems on our production server.  90% of the time the
> transfer rate is 500K/s but 10% it's 15K/s.  I don't know if it's my
> network provider or something wrong with the server.  The tests on the
> network so far have been inconclusive but points to a server issue.
> 
  > I'm fast running out of ideas, as is the ISP.  Can anyone please please
> please help me resolve this situation?

This really smells like a duplex problem.  If you're at 100mbps, force 
the interfaces on both ends to be 100 mbps full duplex.  Do not rely on 
autonegotiation since it will frequently get it wrong.

-- 
Ed Wilts, RHCE
Mounds View, MN, USA
mailto:ewilts at ewilts.org
Member #1, Red Hat Community Ambassador Program




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