[mapguide-users] Unhandled exceptions in IIS web tier

[Ryan Northcott]

I think I recall having to set my recycle limits on the AppPool for
stability from errors in Mapguide as well.
Fiddle Fiddle Fiddle with different setting until things calm down.

I think they could be set by memory size (as you've done) or after a
certain time. I believe I set my Win2008R2 Server to recycle every 2 hours.



On Fri, May 9, 2014 at 9:42 AM, Berg, James <James.Berg at stantec.com> wrote:

> I struggle with events related to mapguide because I don't really
> understand them. Several times a day we get logs like
>
> "A process serving application pool 'MapGuide25AppPool' suffered a fatal
> communication error with the World Wide Web Publishing Service. The process
> id was '17544'. The data field contains the error number. "
>
> with the source being W3SVC. W3svc.exe is the process related to the
> application pool in IIS that represents the website that holds mapguide.
>
> It's tricky for me to figure out what the cause of the errors are. It
> could be a memory leak in my own application (fairly likely,) so I can't
> blame mapguide for it off the bat.
>
> Basically, whenever my application pool fails, maps stop loading until I
> manually recycle the application pool. Without knowing the exact cause, the
> only workaround I've come up with is to configure my application pool to
> automatically recycle whenever it accumulates a certain amount of virtual
> memory. I've got it set to recycle at 800 megabytes, but I might decrease
> that number if problems persist.
>
> The hope is that frequent recycling will prevent errors.
>
> It's also important to note that my application does not use InProc
> session handling in web.config. That's the default setting and application
> pool recycling would reset any sessions (very bad.)  Instead I use the
> StateServer setting. That way session aren't reset upon application pool
> resets.
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