poor throughput question
Craig Partridge
craigp at world.std.com
Sat Jan 8 14:09:57 UTC 2000
It seems to me that you have two distinct concerns:
* Your modem connect speed is not what you'd like. That depends very
much on the particular conditions of the telephone lines between you
and Megapop (testing via another ISP does not demonstrate the state
of the lines, unless that ISP is colocates its equipment with Megapop).
The symptoms you describe are consistent with poor line quality (possibly
due to backhauling of lines)
* Your TCP transfer speeds from whatever site your are measuring from are
not what you'd like.
TCP transfer speeds depend on a variety of factors (distance to the
remote site, congestion, etc). Traceroute is telling you how long
the paths are (are they similarly long via the other ISP)? Tracking
loss is somewhat harder but you can look at your TCP retransmission and
duplicate ack transmission rates at your host to get a sense (these numbers
should be very very low, except when loss occurs).
Others here may have better analysis tools.
Good luck!
Craig
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