One of our web services is run by it's own Application Pool.
It takes the requests, runs a SQL query, and returns some JSON.
Roughly once to twice a month the service will seemingly freeze, and stop responding to requests.
IIS reports the app pool as running, and no log that I know of reports an error.
Restarting the app pool solves the problem, until it decides to hang again.
I have tested requests to the service that I logged as occurring shortly before I believe the app pool froze, but have been unable to duplicate the problem purposefully.
Per some colleague's advice, as they have a similar problem, I have started a task that regularly restarts the app pool.
Is there a way to tell exactly what request - if that is indeed the cause - is causing the app pool to hang?
Are there any causes that might be easy to test for?
Learn to use a performance profiler to see what's up, or open a support case to consult Microsoft support via
http://support.microsoft.com. I don't assume everyone knows how to collect hang dumps and analyze on their own.
Lex Li
Affordable IIS Consulting Services at https://support.lextudio.com/services/consulting.html
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This posting is provided "AS IS" with no warranties, and confers no rights.
1 Post
App Pool Hangs, Only Fixed By Restarting It.
May 06, 2019 09:42 AM|Rayce|LINK
I am new to managing IIS.
One of our web services is run by it's own Application Pool.
It takes the requests, runs a SQL query, and returns some JSON.
Roughly once to twice a month the service will seemingly freeze, and stop responding to requests.
IIS reports the app pool as running, and no log that I know of reports an error.
Restarting the app pool solves the problem, until it decides to hang again.
I have tested requests to the service that I logged as occurring shortly before I believe the app pool froze, but have been unable to duplicate the problem purposefully.
Per some colleague's advice, as they have a similar problem, I have started a task that regularly restarts the app pool.
Is there a way to tell exactly what request - if that is indeed the cause - is causing the app pool to hang?
Are there any causes that might be easy to test for?
8850 Posts
MVP
Re: App Pool Hangs, Only Fixed By Restarting It.
May 06, 2019 01:10 PM|lextm|LINK
Learn to use a performance profiler to see what's up, or open a support case to consult Microsoft support via http://support.microsoft.com. I don't assume everyone knows how to collect hang dumps and analyze on their own.
Affordable IIS Consulting Services at https://support.lextudio.com/services/consulting.html
---------------------------
This posting is provided "AS IS" with no warranties, and confers no rights.