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SubjectRe: Poor TCP throughput in 2.1.103
On 24 May 1998, Andi Kleen wrote:

>
> Seems like the test failed.
>


The problem is that the Ascend can't send a sequence of packets correctly
because of a bug in its VJ compression.

To match the tcpdump log, I also have:


May 22 14:13:18 shawc kernel: TCPv4 bad checksum from 194.159.255.135:0014 to 158.152.146.90:0416, len=1480/1480/1500
May 22 14:13:18 shawc kernel: TCPv4 bad checksum from 194.159.255.135:0014 to 158.152.146.90:0416, len=344/344/364
May 22 14:13:18 shawc kernel: TCPv4 bad checksum from 194.159.255.135:0014 to 158.152.146.90:0416, len=1480/1480/1500
May 22 14:13:22 shawc last message repeated 7 times

If I set a small window at my end, then the Ascend doesn't outreach its
capabilities.


--
Shaw Carruthers - shaw@shawc.demon.co.uk
London SW14 7JW UK
This is not a sig( with homage to Magritte).



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