Hi Daniel,
Thanks for the followup. If the compiliation/@debug has already been turned
off and still encountering out-of-memory exceptions , the problem maybe
somewhat hard to troubleshoot form the surface. And currently I'm thinking
the problem maybe something related to the STATEserver session. Something I
wanted to point out is that storing data in the ASP.NET Session in the
State Service or SQL Server can be memory intensive depending on the types
of data being stored. The w3wp.exe process has to serialize the data
before saving it into session. This can result in 2 - 3 objects being
created for the serialization process to occur. If this occurs for a
dataset that is 100 MB in size, it could
potentially create 200-300 MB of objects to store it in session before the
request is complete. The following link has some information from one of
our developers outlining the differences in session and recommendations:
Understanding session state modes + FAQ
http://www.asp.net/Forums/ShowPost.a...=1&PostID=7504
So is there any particular large objects or non-seriazable objects which
your application frequently trying to store into out of process session?
BTW, looking at the nature of this issue, it would require intensive
troubleshooting(memory dump and analysis) which would be done quickly and
effectively with direct assistance from a Microsoft Support Professional
through Microsoft Product Support Services. So I also recommend you
consider opening a regular case for this issue if you feel it urgent and
critical.
Thanks,
Steven Cheng
Microsoft Online Support
Get Secure!
www.microsoft.com/security
(This posting is provided "AS IS", with no warranties, and confers no
rights.)
--------------------
| Thread-Topic: Trouble with huge amount of State Server Sessions Timed out
| thread-index: AcWOmy/8A6WFkmDUQwaXp3P8aixEzg==
| X-WBNR-Posting-Host: 153.95.95.93
| From: "=?Utf-8?B?RGFuaWVsIFdhbHplbmJhY2g=?="
<da***************@newsgroup.nospam>
| References: <BC**********************************@microsoft.co m>
<Qq**************@TK2MSFTNGXA01.phx.gbl>
<E4**********************************@microsoft.co m>
<6Y**************@TK2MSFTNGXA01.phx.gbl>
| Subject: RE: Trouble with huge amount of State Server Sessions Timed out
| Date: Fri, 22 Jul 2005 01:56:02 -0700
| Lines: 236
| Message-ID: <01**********************************@microsoft.co m>
| MIME-Version: 1.0
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| charset="Utf-8"
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| Newsgroups: microsoft.public.dotnet.framework.aspnet
| NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
| Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGXA03.phx.gbl
| Xref: TK2MSFTNGXA01.phx.gbl
microsoft.public.dotnet.framework.aspnet:113773
| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
|
| Steven,
|
| thank you for your answer. In fact, to my horror, I had to realize that
| <compilation debug/> was set to true which I now changed to false.
| As for your question regarding the server the application is hosted of a
2
| processor xeon with 2 GB RAM and Windows 2003 Server. I checked IIS
| Application Pool Settings and the only thing which is configured is
“Recycle
| worker process (in minutes)? There are no settings configured for
“Memory
| recycling? As I already mentioned there is almost always 1GB RAM
available,
| only for a couple of times when only 800MB were available. Recycling of
the
| process due to lack of memory should definitely not be a problem, at
least
| this is what I would have expected?
| Greetings
|
| Daniel
|
|
| "Steven Cheng[MSFT]" wrote:
|
| > Hi Daniel,
| >
| > Thanks for your followup.
| > Based on my experience, inspite of some code related problems such as
| > memory leak , we can first try checking some common things which may
cause
| > the problem. One most common issue is that when we deploy our release
| > version app the the server, we haven't changed the "compilation"
element's
| > "debug" attrribute to false. Like:
| >
| > <compilation debug="false"/>
| >
| > So is the certain asp.net webapp's web.config debug mode turned off? If
| > not, since the ASP.NET runtime won't use batch compilation for the
pages or
| > other dynamnic compiled resources, it'll make those compiled pages or
| > components in separate assemblies and make the memory divdided into
| > individual sections. Thus, it's possible to cause memory fragment
that'll
| > cause allocate large block of memory failed.
| >
| > In addition, since the ASP.NET has workprocess recycle setting on
memory
| > limitation, that means the runtime will recycle the worker process when
its
| > used memory size has exceed a certain configured value. Is your server
2k
| > server or 2003 server and how much is the total physical memory on the
| > server? For 2k server, the setting is in the <processModel> element
in
| > machine.config, For 2003 server(iis6), we can configure it in the IIS's
| > application pool setting. So you can check whether you've set it memory
| > limit to a very high value so that the process won't recycle before the
| > used memory exceed that value.
| >
| > Thanks,
| >
| > Steven Cheng
| > Microsoft Online Support
| >
| > Get Secure!
www.microsoft.com/security
| > (This posting is provided "AS IS", with no warranties, and confers no
| > rights.)
| >
| >
| >
| >
| >
| >
| > --------------------
| > | Thread-Topic: Trouble with huge amount of State Server Sessions Timed
out
| > | thread-index: AcWNzodnGPnjd/QsSXafQ0Wc5DrJGg==
| > | X-WBNR-Posting-Host: 153.95.95.93
| > | From: "=?Utf-8?B?RGFuaWVsIFdhbHplbmJhY2g=?="
| > <da***************@newsgroup.nospam>
| > | References: <BC**********************************@microsoft.co m>
| > <Qq**************@TK2MSFTNGXA01.phx.gbl>
| > | Subject: RE: Trouble with huge amount of State Server Sessions Timed
out
| > | Date: Thu, 21 Jul 2005 01:31:02 -0700
| > | Lines: 124
| > | Message-ID: <E4**********************************@microsoft.co m>
| > | MIME-Version: 1.0
| > | Content-Type: text/plain;
| > | charset="Utf-8"
| > | Content-Transfer-Encoding: 8bit
| > | X-Newsreader: Microsoft CDO for Windows 2000
| > | Content-Class: urn:content-classes:message
| > | Importance: normal
| > | Priority: normal
| > | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
| > | Newsgroups: microsoft.public.dotnet.framework.aspnet
| > | NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
| > | Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGXA03.phx.gbl
| > | Xref: TK2MSFTNGXA01.phx.gbl
| > microsoft.public.dotnet.framework.aspnet:113562
| > | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| > |
| > | Hello Steven,
| > |
| > | thank you for your reply! As I missed to mention and you most
probably
| > | already guessed the application having the problem is configured
using a
| > | state server running on exactly the same machine as the application
is
| > | running on. This server also hosts another couple of (tiny)
applications
| > | which all are configured to manage their session state inProc.
Therefore
| > the
| > | problem I am facing is only specific to this certain application.
| > |
| > | What information do you need to track down the problem?
| > |
| > | Would you happen to have a documentation of the entries of the
| > Performance
| > | monitor? The explanations which come with performance monitor are not
| > exactly
| > | ausführlich. I still don’t know for example what Errors
During
| > Execution are
| > | and when the application would be compiled. Where would I get details
| > about
| > | this performance counters?
| > |
| > | Thank you Steven! Your help is greatly appreciated!
| > |
| > | Daniel
| > |
| > |
| > | "Steven Cheng[MSFT]" wrote:
| > |
| > | > Hi Daniel,
| > | >
| > | > Welcome to ASPNET newsgroup.
| > | > From your description, you're currently suffering a out-of-memory
| > excpetion
| > | > on your webserver that host the ASP.NET application. Also from the
| > perfmon
| > | > log, you found that there're huge numbers of StateServer Session
time
| > out
| > | > entries.
| > | >
| > | > Well, for the
| > | >
| > | > \\FFDS24\ASP.NET v1.1.4322\State Server Sessions Timed Out: 2999
| > | >
| > | > \\FFDS24\ASP.NET v1.1.4322\State Server Sessions Total: 3008
| > | >
| > | > entries they're only meaningful to server which is configured to
| > running
| > | > asp.net state service , providing session state server for other
remote
| > | > machines(also local). So is your problem server confgured as state
| > server?
| > | >
| > | > Also, how many asp.net apps are there running on your problem
server
| > and
| > | > can you try isolate the problem to only a particular web app among
| > them?
| > | > If we can isolate the problem to a certain web app , it'll be much
| > helpful
| > | > for us to look into it futher.
| > | >
| > | > Thanks,
| > | >
| > | > Steven Cheng
| > | > Microsoft Online Support
| > | >
| > | > Get Secure!
www.microsoft.com/security
| > | > (This posting is provided "AS IS", with no warranties, and confers
no
| > | > rights.)
| > | >
| > | >
| > | >
| > | >
| > | >
| > | >
| > | > --------------------
| > | > | Thread-Topic: Trouble with huge amount of State Server Sessions
Timed
| > out
| > | > | thread-index: AcWNR7tAoqsBFvieQ/mCzcaOTyN/QA==
| > | > | X-WBNR-Posting-Host: 153.95.95.93
| > | > | From: "=?Utf-8?B?RGFuaWVsIFdhbHplbmJhY2g=?="
| > | > <da***************@newsgroup.nospam>
| > | > | Subject: Trouble with huge amount of State Server Sessions Timed
out
| > | > | Date: Wed, 20 Jul 2005 09:26:07 -0700
| > | > | Lines: 30
| > | > | Message-ID: <BC**********************************@microsoft.co m>
| > | > | MIME-Version: 1.0
| > | > | Content-Type: text/plain;
| > | > | charset="Utf-8"
| > | > | Content-Transfer-Encoding: 8bit
| > | > | X-Newsreader: Microsoft CDO for Windows 2000
| > | > | Content-Class: urn:content-classes:message
| > | > | Importance: normal
| > | > | Priority: normal
| > | > | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
| > | > | Newsgroups: microsoft.public.dotnet.framework.aspnet
| > | > | NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.2.250
| > | > | Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGXA03.phx.gbl
| > | > | Xref: TK2MSFTNGXA01.phx.gbl
| > | > microsoft.public.dotnet.framework.aspnet:113420
| > | > | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| > | > |
| > | > | Hi,
| > | > |
| > | > | I have a web application which sometimes throws an â€
“out of
| > memoryââ?
| > | > | exception. To get an idea what happens I traced some values using
| > | > performance
| > | > | monitor and got the following values (for one day):
| > | > |
| > | > | \\FFDS24\ASP.NET Applications(_LM_W3SVC_1_Root_ATV2004)\Errors
During
| > | > | Execution: 7
| > | > |
| > | > | \\FFDS24\ASP.NET Apps
| > v1.1.4322(_LM_W3SVC_1_Root_ATV2004)\Compilations
| > | > | Total: 10
| > | > |
| > | > | \\FFDS24\ASP.NET Apps v1.1.4322(_LM_W3SVC_1_Root_ATV2004)\Errors
| > Total: 7
| > | > |
| > | > | \\FFDS24\ASP.NET v1.1.4322\State Server Sessions Timed Out: 2999
| > | > |
| > | > | \\FFDS24\ASP.NET v1.1.4322\State Server Sessions Total: 3008
| > | > |
| > | > |
| > | > | Could somebody please provide me with some background information
on
| > | > those
| > | > | values? What exactly would be an Errors During Execution? And
what
| > could
| > | > be
| > | > | the reason for this huge amount of State Server Sessions Timed
out?
| > | > |
| > | > | Processor time was < 2% for the whole day and the server almost
| > always
| > | > had
| > | > | 1GB of free RAM.
| > | > |
| > | > |
| > | > | Thank you a lot in advance!
| > | > |
| > | > | Daniel
| > | > |
| > | >
| > | >
| > |
| >
| >
|
