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SubjectRe: very slow ftp connection over ISDN between 2.2.11 and 2.2.10
Marc Mutz wrote:

> rates start below 3K/sec and soon fall towards 1.0 thru 1.3K/sec,

This may be completely wrong, but I have found lately that turning off tcp
timestamps:

echo "0" > /proc/sys/net/ipv4/tcp_timestamps

improves throughput on quite a few links (www.meldrum.co.uk being one of
them). I don't know why.

Using HiSax ISDN here (still stalling on large outgoing files after a few
hours uptime, rmmod and insmod-ing the entire isdn module set fixes the
problem temporarily).

JHW




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