% I'm taking part in an ADSL trial in the UK and the ISP is having
% problems with me hosting more than about 4 racers. I told him that in
% the US and Canada they are able to provide that service so he asked me
% if I knew which companies were providing large GPL grid capable services
% so that he could reference what they were doing.
% So all of you hosting large GPL grids through ADSL hosts, please can you
% tell me the name of the company running your ADSL line plus if possible
% some contact details - email, url, phone number etc.
Both the ISP and the telephone company need to get their equipment
synchronized (but I assume that is being done). I have 256k ADSL here
in the States. The standard 256k ADSL usually has 384 Kbps downstream
and 128 Kbps upstream. However, some ISP's have capped the service to
lower transfer rates (usually upstream -- I have heard of some being as
low as 56K upstream). With a 128K upstream one should expect to host up
to 6-8 clients comfortably and could possibly go up to 10.
However, my ISP seems to have set my downstream and upstream speeds
differently from the "normal" service. During tests, I appear to have
about 280K downstream and 260K upstream. With this combination, I have
been able to host 12-14 clients safely and at times have had 15-16
clients (though this is usually pushing the edge).
Other things to consider are the configurations and loads on the routers
within your ISP (you can check these out by using traceroute (Win9x
tracert.exe). I would traceroute out and have others traceroute in and
send you the results.
If your ADSL is hooked up via an Ethernet card, I would look into
setting up your TCP/IP configuration to achieve the maximum throughput.
See my comments at Alison's GPL Online FAQ
<http://www.nh.ultranet.com/~alison/gpl/carver.htm>.
You may want to have your ISP's engineering staff contact my ISP's
engineering staff to see how their system is configured
--
**************************** Michael E. Carver *************************
Upside out, or inside down...False alarm the only game in town.
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