Hi - I'm running the latest version of DNN (4.8.2)  on SQL 2005, IIS 6 on a fairly beefy box (dual, duo-core 2.4GHz, 4 Gigs Ram, etc.). There are no other sites running on this server, and it is NOT in production yet, so at any given time there is only ever 1 or 2 users online.

In the last few days, I've noticed intermittent slowdowns (and complete lockups) of my new site. On the server, the CPU sits nearly idle (0-1% util), Memory is flatlined very low, I/O is very low, and SQL is idling at like 1-3%.

On IIS - I've tried resetting the app pools and even stopping/starting the web service. No effect.

On SQL - I've truncated the logs and have a weekly schedule to re-index all tables, etc. No effect.

On DNN, I've checked all schedules and they don't correspond to the slowdown/lockups at all.

Local Connection: I've checked my local connection and have tried connecting from different places, so it's not my connection to the internet.

I have seen some interesting logs in the event viewer, but none of them correspond to the slowdowns either (I've pasted two very common ones below).

Interestingly enough, I've started getting some popup message that read "Sys.Webforms.pageRequestManager TimeoutException : the server request timed out ."

I'm really scratching my head on this one as I originally thought it might have to do with the service schedule for the forums, but this isn't it.

Any thoughts about this at all? I'm really stumped and could use some expert help on this.

Here is my random guess as to what your problem may be:

blogs.snapsis.com/CommentView,guid,37b89073-dc91-4ae1-b5c5-94d9a0980c7d.aspx

Hope it works for you....

James

Thanks James - I just tried that and I'll watch it.

Sebastian - I actually scheduled the search logs to clear like this twice weekly via SQL server, so I don't think that's the issue.
I've also set all of the scheduled events in DNN to run much LESS frequently, which has calmed the SQL server down.

However... the real problem still persists, which is that the web site completely hangs for several minutes at a time, quite randomly. If I run a load test w/20 users concurrently, I can get the web site to run for about a minute. Then it hangs completely. I can watch perfmon on the server and the thing still idles along at 2% CPU, very low memory, low I/O, etc.

If I kill WPW3.exe, the web site will come back to life immediately and work fine for several seconds or a minute or two, then it just completely hangs again.

I'm really confused on this one, especially since I can't see a culprit or a problem anywhere. The event viewer in DNN is not showing any errors either.

Thanks in advance team! I really want to migrate my magazine to DNN as I realllllly love it's functionality. But with 350,000 registered readers, I just can't do it with it being in its current state.

P.S. There is nothing else running on this server.

Rick