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I'm having trouble accessing your web site and/or downloading files. Why is access to your web site so slow?


Internet access is always a strange thing. Between our web server and your computer are a number of machines that we can't control. If one of them is slow, then that whole connection is slow. We realize this is an important issue, and we have taken a number of steps to address it. For example:

  • We have a dedicated, on-site, high-speed, high-reliability web server. Since this is a dedicated server, web service is fast.
  • Since our web server is on-site, we can update the contents whenever new information becomes available.
  • We have the equivalent of three T1 connections to the internet. Our internet connection is a redundant, load-balancing, dedicated connection with failover capability. If there's a speed problem, it's usually not on our end.

If you continuously have problems, try running a trace route on the connection. If you have Windows95 or WindowsNT, the tracert program may be found in your Windows directory. To trace a connection, enter the following command in a DOS box:


This will trace the route from your site to the Keil Software web server. It will appear similar to the following:

traceroute to ( from (, 20 hops max, 40 byte packets

 1 (  0.475 ms  0.334 ms
 2 (  0.589 ms  0.450 ms
 3 (  13.848 ms  15.489 ms
 4 (  13.394 ms  14.210 ms
 5 (  13.741 ms  13.154 ms
 6 (  16.812 ms  14.510 ms
 7 (  15.641 ms  16.327 ms
 8 (  46.657 ms  48.354 ms
 9 (  47.030 ms  46.519 ms
10 (  46.930 ms  47.175 ms
11 (  48.535 ms  47.804 ms
12 (  51.153 ms  51.228 ms
* *
* *
* *

After you get to our firewall, ping requests are no longer accepted. Note that one of the networks we interface to is Verio, so if you get to, you are one hop away from our network.

You may want to contact your Internet Service Provider to see if they have any suggestions on how to improve performance.

Our statistics indicate that the best time to surf our web site is between 7:00pm and 11:00pm Central Standard Time.

Last Reviewed: Thursday, October 18, 2001

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