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HomeHomeGetting StartedGetting StartedInstalling DNN ...Installing DNN ...Frequently resetting app poolFrequently resetting app pool
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8/23/2008 12:37 PM
 
Bobby P

Joined: 1/25/2008
Posts: 128

So I learned the hard way :-) DNN gets REALLY quirky once you make it a web garden. Modules randomly appear/disappear.

Are you getting errors in the Event Log? Can you post some of those if so? How about your Windows Application or System logs, anything out of the ordinary there?

I'm not getting any errors in the event log. Getting this Information Message repeatedly:

'SQL Server has encountered 1 occurrence(s) of cachestore flush for the 'SQL Plans' cachestore (part of plan cache) due to some database maintenance or reconfigure operations.'

Your AppPool, is it the default AppPool? Permissions set correctly? Is this the only web app on the server?Have you removed any un-necessary jobs from the scheduler? Are you using any type of HTML compression or white-space removal?

I'm not using the default app pool. This portal is the only application in the pool. I have other portals on the server, which all work perfectly even when this site stops responding. Scheduler, Compression and white space are at default.
 
New Post
8/23/2008 1:11 PM
 
Bobby P

Joined: 1/25/2008
Posts: 128

After some googling, I found some interesting information about the issue I'm having. According to this thread, from 2007, it may be the store module that's consuming all these resources. I don't remember the site acting like this before adding the store, but I could be wrong. I'm running the store version 2.01.00 on Windows Server 2008... is this a known issue?

I uninstalled the 1 3rd party module I was using, and uninstalled every other module that I'm not using, and the site is still doing the same thing (store still installed)

here is the forum link:
http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/114/threadid/160892/scope/posts/Default.aspx

The blog listed there suggests setting the appPool to reset at (max RAM / # of AppPools) * .8, which effectively resets the appPool whenever it consumes 80% of the RAM shared by all appPools. I'm pretty sure this would work, since the site kicks right in everytime I manually reset the appPool when it goes over a certain amount of RAM... but it seems like a bandaid.

Robert
 
New Post
8/23/2008 1:26 PM
 
Chris Smith


www.nddllc.com
Joined: 1/25/2003
Posts: 681

What version SQL Server are you using? Are you using a system (Integrated Security) or SQL user for DNN database? Does this user have the proper permissions to the DNN database.

For your AppPool, are you using NetworkService or a unique identity? If it's a unique identity, is this user a member of the IIS_WPG? And does that user or Network Service have the proper permissions to the DNN home directory and all child opbects?

 
 
New Post
8/23/2008 2:18 PM
 
Bobby P

Joined: 1/25/2008
Posts: 128

What version SQL Server are you using? Are you using a system (Integrated Security) or SQL user for DNN database? Does this user have the proper permissions to the DNN database.

I'm running SQL Server 2005 Enterprise. I'm using Integrated Security... The site works fine and authenticates fine.

For your AppPool, are you using NetworkService or a unique identity? If it's a unique identity, is this user a member of the IIS_WPG? And does that user or Network Service have the proper permissions to the DNN home directory and all child opbects?

I'm using the NetworkService account, and it has proper permissions for everything. The site works 100%, authentication and all, for 3-4 days, then just stops responding when the resources shoot up to about 110 megs. The other app pools continue to work fine at this point, so it's not that the server is out of RAM.

Robert
 
New Post
9/3/2008 2:41 PM
 
Bobby P

Joined: 1/25/2008
Posts: 128

Solution:

The site has been up 100% since making a few changes.

1. I set the Application Pool to Auto-Recycle at 90 Megs. Watching the event log, the site recycles about once every 2-3 days. I don't know if this is associated with the Store module, but none of my non-store portals have this issue.

2. I added more RAM (3 more gigs). Interestingly enough, since adding more RAM, the site seems to use LESS resources?? Instead of consuming up to 50-80 Megs of memory after 2-3 requests, it rests more comfortably at around 35 Megs. Even though there were marginal system resources remaining when the site was crashing, for some reason the site was shooting up to high resource values quickly when memory was low.

Robert
 
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HomeHomeGetting StartedGetting StartedInstalling DNN ...Installing DNN ...Frequently resetting app poolFrequently resetting app pool


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