Thread: Performance issue when changing server

I just moved a site from one Windows 2003 server x86, to a new Windows 2003 R2, SP2, x86 server.

On the old server I had a "keep alive" checker hitting the site every 5 minutes. Page load speeds would consistently be around .25 of a second.

On the new server, same setup, some requests take 10-11 seconds, and some take .25 or so of a second.

I have gone over the settings over and over and can't find any rhyme or reason for this.

these are both virtual machines on the same HyperV server, just one is a fresh windows server install and one was very old (thus is why we were dumping it).

Obviously this is a concern because 2 days ago the load times were consistently .25 second, now it might take 10 seconds or .25 a second to load the homepage. If I go in and out of the site a few times over a few minutes in IE8, sometimes a fast load, sometimes a 10 second load.

I have gone into the application pool and even disabled the IDLE timeout.

Lastly, this is on a site with very little traffic.

thanks in advance for any advice.

Do you get same delay using Firefox or Chrome. ? I just started seeing delays on my site, but only when using IE8.

Well, the delay isn't browser dependent.

I have an outside service hitting the site every 5 minutes which does a fetch of the site to "keep it compiled".

Updates:

I made this switch on Thursday night and ever since the new machine keeps doing the 10.5 second, then .25 sec, .25 sec type fetch durations.

When I look at the "fetch" logs from, for example, April 1, 2010, for an 18 hour period from midnight until 6pm, the longest fetch of the homepage was 3.56 seconds, and the average was around .15 sec. (on the old server).

I have since restored the site to the old server and setup a testing URL, and put another fetch on the homepage. For the last 6 hours, it too is doing the ~10.5 sec then .25 sec .25 sec etc.

so it now looks like even the old server is now doing this weird pattern.