RE: Web Service stops responding randomly
- From: stcheng@xxxxxxxxxxxxxxxxxxxx (Steven Cheng[MSFT])
- Date: Wed, 01 Nov 2006 09:37:38 GMT
Hello Juan,
From your description, I understand you have an ASP.NET webservice and hoston a windows 2003 server IIS5, it will periodly stop responding and require
you to restart the WWW service, correct?
As for this problem, I'd like to confirm the the following things first:
** windows 2003 by default has IIS6 has the component, do you mean you
configure IIS6 to run under IIS5 compatible mode?
** As for the ASP.NET webservice, would you provide some detailed code
logic about it, such as whether it is calling other components or do any
database or IO operations itself.
Based on my experience, there're several things that can make the
webservice(or other ASP.NET web applications) not responding.
** When ASP.NET application restart or the worker process get recycled, it
will unable to process new requests. This could happen when there occur
unhandled exception or the worker process has exceed the recycle
limitation. You can check the server's event log to see whether there is
any process recycle or exception information related to your ASP.NET
webservice application
** It is also possible that there occurs some lock issue which makes the
worker threads get blocked, thus, ASP.NET's free worker threads will get
exhausted and unable to respond further comming requests.
For general troubleshooting, you can check the following objects to detect
your application's wellness:
#server eventlog
#task manager(for CPU and memory usage)
#performance counter(asp.net specific) --- can inspect process and thread
statistics.
Hope this helps. Please feel free to post here if you have any other
findings.
Sincerely,
Steven Cheng
Microsoft MSDN Online Support Lead
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