AppDomain Resetting

Rob Bazinet

Hello all;

I have an ASP.NET application which I run part of it in a new thread. The
part running is very processor and time intensive and takes an hour plus to
complete.

The problem I am experiencing is after the thread has been running for about
20 min it stops. I am running this app on a Windows 2003 server and SQL
Server 2000 on the backend. I suspect it may be a SessionState time out
issue and I have played with the settings at the server and app level on IIS
and in the machine.config, increasing all values from the default value of
20 min to 120 min in the hopes it would work. I did get the process to run
for 60 min one time AFTER increasing the timeout to 120 min but the process
is stopping at about 20 min again.

Anyone have any insight into this and can help it would be appreciated.

Thanks in advance,
Rob Bazinet

Nov 18 '05 #1

Subscribe Post Reply

1284

Scott Allen

In the IIS MMC, check the "Shutdown worker process if idle for X
minutes setting". Go to Application pools, right click and select
Properties for the pool your application runs in. This setting is the
first on the Performance tab.

--
Scott
http://www.OdeToCode.com/blogs/scott/

On Mon, 22 Nov 2004 14:19:51 -0500, "Rob Bazinet"
<rb********@hotmail.com> wrote:

Hello all;

I have an ASP.NET application which I run part of it in a new thread. The
part running is very processor and time intensive and takes an hour plus to
complete.

The problem I am experiencing is after the thread has been running for about
20 min it stops. I am running this app on a Windows 2003 server and SQL
Server 2000 on the backend. I suspect it may be a SessionState time out
issue and I have played with the settings at the server and app level on IIS
and in the machine.config, increasing all values from the default value of
20 min to 120 min in the hopes it would work. I did get the process to run
for 60 min one time AFTER increasing the timeout to 120 min but the process
is stopping at about 20 min again.

Anyone have any insight into this and can help it would be appreciated.

Thanks in advance,
Rob Bazinet

Nov 18 '05 #2

Rob Bazinet

Scott,

Well, the setting is 20 min., which is the magic number but....it is
indicating idle time and I wouldn't think the worker process would be idle
at this point. Am I interpreting this setting incorrectly??? If I start
my process and watch utilization on w3wp.exe it is running at about 70-80%
the entire time. What am I missing??

Thanks,
Rob

"Scott Allen" <bitmask@[nospam].fred.net> wrote in message
news:ka********************************@4ax.com...

In the IIS MMC, check the "Shutdown worker process if idle for X
minutes setting". Go to Application pools, right click and select
Properties for the pool your application runs in. This setting is the
first on the Performance tab.

--
Scott
http://www.OdeToCode.com/blogs/scott/

On Mon, 22 Nov 2004 14:19:51 -0500, "Rob Bazinet"
<rb********@hotmail.com> wrote:
Hello all;

I have an ASP.NET application which I run part of it in a new thread. The
part running is very processor and time intensive and takes an hour plus
to
complete.

The problem I am experiencing is after the thread has been running for
about
20 min it stops. I am running this app on a Windows 2003 server and SQL
Server 2000 on the backend. I suspect it may be a SessionState time out
issue and I have played with the settings at the server and app level on
IIS
and in the machine.config, increasing all values from the default value of
20 min to 120 min in the hopes it would work. I did get the process to
run
for 60 min one time AFTER increasing the timeout to 120 min but the
process
is stopping at about 20 min again.

Anyone have any insight into this and can help it would be appreciated.

Thanks in advance,
Rob Bazinet

Nov 18 '05 #3

bruce barker

Nov 18 '05 #4

Scott Allen

As bruce pointed out, you'll need incoming requests to keep the app
alive (or change / disable the setting).

--
Scott
http://www.OdeToCode.com/blogs/scott/

On Mon, 22 Nov 2004 14:44:45 -0500, "Rob Bazinet"
<rb********@hotmail.com> wrote:

Scott,

Well, the setting is 20 min., which is the magic number but....it is
indicating idle time and I wouldn't think the worker process would be idle
at this point. Am I interpreting this setting incorrectly??? If I start
my process and watch utilization on w3wp.exe it is running at about 70-80%
the entire time. What am I missing??

Thanks,
Rob

"Scott Allen" <bitmask@[nospam].fred.net> wrote in message
news:ka********************************@4ax.com.. .
In the IIS MMC, check the "Shutdown worker process if idle for X
minutes setting". Go to Application pools, right click and select
Properties for the pool your application runs in. This setting is the
first on the Performance tab.

--
Scott
http://www.OdeToCode.com/blogs/scott/

On Mon, 22 Nov 2004 14:19:51 -0500, "Rob Bazinet"
<rb********@hotmail.com> wrote:
Hello all;

I have an ASP.NET application which I run part of it in a new thread. The
part running is very processor and time intensive and takes an hour plus
to
complete.

The problem I am experiencing is after the thread has been running for
about
20 min it stops. I am running this app on a Windows 2003 server and SQL
Server 2000 on the backend. I suspect it may be a SessionState time out
issue and I have played with the settings at the server and app level on
IIS
and in the machine.config, increasing all values from the default value of
20 min to 120 min in the hopes it would work. I did get the process to
run
for 60 min one time AFTER increasing the timeout to 120 min but the
process
is stopping at about 20 min again.

Anyone have any insight into this and can help it would be appreciated.

Thanks in advance,
Rob Bazinet

Nov 18 '05 #5

Rob Bazinet

Thank you to both of you for the replies. It worked great. I had never had
a long running process like this and it was a learning experience.

-Rob

"Scott Allen" <bitmask@[nospam].fred.net> wrote in message
news:bi********************************@4ax.com...

As bruce pointed out, you'll need incoming requests to keep the app
alive (or change / disable the setting).

--
Scott
http://www.OdeToCode.com/blogs/scott/

On Mon, 22 Nov 2004 14:44:45 -0500, "Rob Bazinet"
<rb********@hotmail.com> wrote:
Scott,

Well, the setting is 20 min., which is the magic number but....it is
indicating idle time and I wouldn't think the worker process would be idle
at this point. Am I interpreting this setting incorrectly??? If I start
my process and watch utilization on w3wp.exe it is running at about 70-80%
the entire time. What am I missing??

Thanks,
Rob

"Scott Allen" <bitmask@[nospam].fred.net> wrote in message
news:ka********************************@4ax.com. ..
In the IIS MMC, check the "Shutdown worker process if idle for X
minutes setting". Go to Application pools, right click and select
Properties for the pool your application runs in. This setting is the
first on the Performance tab.

--
Scott
http://www.OdeToCode.com/blogs/scott/

On Mon, 22 Nov 2004 14:19:51 -0500, "Rob Bazinet"
<rb********@hotmail.com> wrote:

Hello all;

I have an ASP.NET application which I run part of it in a new thread.
The
part running is very processor and time intensive and takes an hour plus
to
complete.

The problem I am experiencing is after the thread has been running for
about
20 min it stops. I am running this app on a Windows 2003 server and SQL
Server 2000 on the backend. I suspect it may be a SessionState time out
issue and I have played with the settings at the server and app level on
IIS
and in the machine.config, increasing all values from the default value
of
20 min to 120 min in the hopes it would work. I did get the process to
run
for 60 min one time AFTER increasing the timeout to 120 min but the
process
is stopping at about 20 min again.

Anyone have any insight into this and can help it would be appreciated.

Thanks in advance,
Rob Bazinet

Nov 18 '05 #6

Rick Strahl [MVP]

Hi Rob,

I see that Scott and Bruce have pointed you in the right direction for the
actual problem.

But I would suggest that you think about some async mechanism to actually
run your requests if they are taking this long. Start up a new thread or an
Async HTTP Handler, or better yet run this operation in a separate
process/machine.

Long Web Requests, because of the ASP.NET thread pool, are ggenerally not a
good idea as they can cause a variety of problems including these timeouts.
If somebody hits that request more than once you're going to kill the
machine most likely for example.

+++ Rick ---

--

Rick Strahl
West Wind Technologies
http://www.west-wind.com/
http://www.west-wind.com/weblog/
http://www.west-wind.com/wwThreads/
----------------------------------
Making waves on the Web
"Rob Bazinet" <rb********@hotmail.com> wrote in message
news:uq**************@TK2MSFTNGP12.phx.gbl...

Hello all;

I have an ASP.NET application which I run part of it in a new thread. The
part running is very processor and time intensive and takes an hour plus to complete.

The problem I am experiencing is after the thread has been running for about 20 min it stops. I am running this app on a Windows 2003 server and SQL
Server 2000 on the backend. I suspect it may be a SessionState time out
issue and I have played with the settings at the server and app level on IIS and in the machine.config, increasing all values from the default value of
20 min to 120 min in the hopes it would work. I did get the process to run for 60 min one time AFTER increasing the timeout to 120 min but the process is stopping at about 20 min again.

Anyone have any insight into this and can help it would be appreciated.

Thanks in advance,
Rob Bazinet

Nov 18 '05 #7

Rob Bazinet

Rick,

Great suggestions. Do you have an resources you can point me to? I wasn't
sure what approach to take with my long running process and the thread
seemed to be a solution but if you have something better I would be glad to
try it.

Thanks,
Rob

"Rick Strahl [MVP]" <ri********@hotmail.com> wrote in message
news:%2****************@TK2MSFTNGP14.phx.gbl...

Hi Rob,

I see that Scott and Bruce have pointed you in the right direction for the
actual problem.

But I would suggest that you think about some async mechanism to actually
run your requests if they are taking this long. Start up a new thread or
an
Async HTTP Handler, or better yet run this operation in a separate
process/machine.

Long Web Requests, because of the ASP.NET thread pool, are ggenerally not
a
good idea as they can cause a variety of problems including these
timeouts.
If somebody hits that request more than once you're going to kill the
machine most likely for example.

+++ Rick ---

--

Rick Strahl
West Wind Technologies
http://www.west-wind.com/
http://www.west-wind.com/weblog/
http://www.west-wind.com/wwThreads/
----------------------------------
Making waves on the Web
"Rob Bazinet" <rb********@hotmail.com> wrote in message
news:uq**************@TK2MSFTNGP12.phx.gbl...
Hello all;

I have an ASP.NET application which I run part of it in a new thread.
The
part running is very processor and time intensive and takes an hour plus

to
complete.

The problem I am experiencing is after the thread has been running for

about
20 min it stops. I am running this app on a Windows 2003 server and SQL
Server 2000 on the backend. I suspect it may be a SessionState time out
issue and I have played with the settings at the server and app level on

IIS
and in the machine.config, increasing all values from the default value
of
20 min to 120 min in the hopes it would work. I did get the process to

run
for 60 min one time AFTER increasing the timeout to 120 min but the

process
is stopping at about 20 min again.

Anyone have any insight into this and can help it would be appreciated.

Thanks in advance,
Rob Bazinet

Nov 18 '05 #8

Rob Bazinet

Rick,

Actually, I am starting a new thread for my long running process. Are you
referring to some other approach?

I am not familiar with Async Handlers but I will look into them.

Thanks,
Rob

"Rick Strahl [MVP]" <ri********@hotmail.com> wrote in message
news:%2****************@TK2MSFTNGP14.phx.gbl...

Hi Rob,

I see that Scott and Bruce have pointed you in the right direction for the
actual problem.

But I would suggest that you think about some async mechanism to actually
run your requests if they are taking this long. Start up a new thread or
an
Async HTTP Handler, or better yet run this operation in a separate
process/machine.

Long Web Requests, because of the ASP.NET thread pool, are ggenerally not
a
good idea as they can cause a variety of problems including these
timeouts.
If somebody hits that request more than once you're going to kill the
machine most likely for example.

+++ Rick ---

--

Rick Strahl
West Wind Technologies
http://www.west-wind.com/
http://www.west-wind.com/weblog/
http://www.west-wind.com/wwThreads/
----------------------------------
Making waves on the Web
"Rob Bazinet" <rb********@hotmail.com> wrote in message
news:uq**************@TK2MSFTNGP12.phx.gbl...
Hello all;

I have an ASP.NET application which I run part of it in a new thread.
The
part running is very processor and time intensive and takes an hour plus

to
complete.

The problem I am experiencing is after the thread has been running for

about
20 min it stops. I am running this app on a Windows 2003 server and SQL
Server 2000 on the backend. I suspect it may be a SessionState time out
issue and I have played with the settings at the server and app level on

IIS
and in the machine.config, increasing all values from the default value
of
20 min to 120 min in the hopes it would work. I did get the process to

run
for 60 min one time AFTER increasing the timeout to 120 min but the

process
is stopping at about 20 min again.

Anyone have any insight into this and can help it would be appreciated.

Thanks in advance,
Rob Bazinet

Nov 18 '05 #9

Similar topics

AppDomain Issue...

by: Satinderpal Singh | last post by:

Hi All, I have an EXE, I load the DLL from that exe in a seperate AppDomain. (I have not given reference to that DLL from the EXE). Now, i call some commands of that dll from the EXE, and in...

.NET Framework

Calling a static method in another AppDomain

by: Chris | last post by:

Hi I have a scenario where I've created another AppDomain to dynamically load a DLL(s) into. In this newly loaded DLL I want to call a static method on a class. The problem arise is that I have...

.NET Framework

Plugins and AppDomain(s) - One or many?

by: stu_pb | last post by:

I am designing a plugin system for a window application using .NET(C# specifically). One of the requirements of the plugin system is to be able to dynamically load/unload plugins. My initial...

.NET Framework

Cross AppDomain Communication, Scripting

by: MatthewRoberts | last post by:

Howdy All, I am having difficulty with two-way communication across AppDomains in an attempt to dynamically script applications. Everything works as expected, except when using ByRef parameters....

.NET Framework

AppDomain creation gets increasingly expensive

by: Chris Lacey | last post by:

Hi, I'm currently writing a scheduling service which starts a number DotNet executables, each within a new AppDomain, every ten seconds. The guts of the code is as follows: // For each...

.NET Framework

AppDomain Probing issue

by: A. Elamiri | last post by:

Hello, I created a small app which acts as a services manager. I basically drop a DLL in a Services folder and set the frequency through the application for how often do I want the code in the...

C# / C Sharp

AppDomain and Unload

by: Wal Turner | last post by:

Hi there. There are various snippets on forums regarding issues with AppDomain.Unload and how it just doesnt work. Fortunately, I got it working with the base case, after much fiddling. Consider...

C# / C Sharp

Appdomain loading question

by: Andrew Ducker | last post by:

I'm trying to load an assembly into a temporary AppDomain rather than my main AppDomain, so that it can be unloaded later on. However, it's also loading into my main AppDomain at the same time. ...

C# / C Sharp

How to get the Appdomain Object from AppDomain ID

by: John | last post by:

I have a AppDomain ID, how do I get the instance of the AppDomain Object? Please advice. Thanks in advance. John

C# / C Sharp

Preloading assemblies into an AppDomain I create

by: illegal.prime | last post by:

Hi all, I'm getting unexpected results when trying to preload assemblies into an AppDomain I'm creating. Upon creation of the AppDomain - I attach an AssemblyResolve to both my current AppDomain...

C# / C Sharp

Cloud Servers without Credit Card and Email Registration: A Simpler Way to Get on the Cloud

by: CloudSolutions | last post by:

Introduction: For many beginners and individual users, requiring a credit card and email registration may pose a barrier when starting to use cloud servers. However, some cloud server providers now...

General

Wordpress or something else?

by: Faith0G | last post by:

I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...

Content Management Systems

How to turn on java script in a villaon keypad mobile phone

by: Charles Arthur | last post by:

How do i turn on java script on a villaon, callus and itel keypad mobile phone

Java

Batch import of multiple excel files into the database

by: ryjfgjl | last post by:

If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...

Data Management

Merging data from multiple Excel files

by: ryjfgjl | last post by:

In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...

Data Management

Navigating the Data Structures and Algorithms (DSA)

by: BarryA | last post by:

What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...

Algorithms / Advanced Math

Looking to do Android software development, any suggestions? Is flutter better?

by: nemocccc | last post by:

hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?

General

Is that possible of reading the .csv file in column wise and the column have different lengths ?

by: Sonnysonu | last post by:

This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...

C / C++

How to build RAID in BIOS?

by: Hystou | last post by:

There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...

Computer Hardware