Re: [cobalt-users] RaQ4r FTP kills the server - help!

[James Riordon <cobalt@xxxxxxxxxx>]

At 11:35 AM -0400 5/31/01, Steve Werby wrote:

> There are lots of reasons data transfer can be slow.  You need to eliminate
> some possible causes.

Thanks for all the hints. We have actually dropped working with our 
latest colo. There were to many things that were not quite *right*. I 
will abstain from mentioning names here for certain reasons. The 
apparent reason ended up being a reverse DNS lookup issue, 
apparently... thanks for all anyway.

>  You can even have some fun with "ab" the Apache
> benchmarking tool.  I just sent 100 page requests for www.amigo-3.com and
> the average transfer was 23.9 kb/sec.

Hmm. The site www.amigo-3.com is on our current colo facility which 
we have been quite happy with. We can get simultaneous multiple 
downloads at a sustained rate of well over 300KB/s while getting hit 
with literally 1000's of hits per hour and not see any degredation in 
performance. So, I think I do not understand the results fromf ab 
from apache. I ran it myself (thanks for mentioning it, I never knew 
about it before) and see the results for myself, but that leaves me 
slightly mystified. Any explanation for that. Also, I ran ab on 
google myself and got a result of only 21.83kb/s. Hmm, does the kb 
stand for kilobits or kilobytes?

I have learnt a lot over the last couple of days. I now have a much 
better idea of what to ask and what tests to perform myself when 
looking for a colo facility.

Next we are thinking of trying out www.cobaltsystems.com. Anyone have 
any thoughts on this one. I found them on google, but have never 
heard of them before.

Also, can someone perhaps email me offline or post a list of useful 
testing tools to check a remote server for speed etc...apart from the 
obvious ping/traceroute of course :o)

Thanks again to the list for the help.
--
James Riordon
SysAdmin
http://www.amigo-3.com