Process Running On An IIS Server Spawns A W3wp.exe For Each Application?
Mar 9, 2011Which process running on an IIS web server is responsible for the creation of w3wp.exe worker processes for each asp.net application?
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Jan 8, 2011I wrote a windows service of batch processor to request statistic information from a web service whose url is end with *.ashx. The windows service and web service are on the same PC. When the batch tasks started, CPU usage came from 1% to 99%, w3wp.exe took 70%, and sqlserver.exe took 29%. About five minutes later the batch process tasks completed, but CPU usage still kept the level 60%, w3wp.exe took 40%, and sqlserver.exe took 20%, and it's never down. Request codes in batch processor are:
[Code]....
How can I bring down the CPU usage? PS. OS version WIndows 2003 sp2; SQL 2008 sp2; iis 6; Four Cores AMD CPU; 4G Memory
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Mar 9, 2011I am logged in as the administrator when I installed an application named pdflatex.exe on my server. This application works as a converter from LaTeX input file to Pdf file. I host an Asp.net MVC 3 application running under an Application Pool Identity with Load User Profile = True. The Asp.net MVC 3 code contains a code that executes pdflatex.exe using System.Diagnostic.Process instance as follows:
Process p = new Process();
p.EnableRaisingEvents = true;
p.Exited += new EventHandler(p_Exited);
p.StartInfo.Arguments = "-interaction=nonstopmode " + inputpath;
p.StartInfo.WorkingDirectory = @"c:mydomain.comworking";
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From the scenario above, the web application runs under a restricted acount but it executes an external application under a default account that I don't know. Can an application running under a less privileged account start a process executing another application under an administrative account?
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Aug 4, 2010im using win 2003 server,
when attaching process im unable to find the w3wp.exe working process.
i didnt find in the application process.
what should be done in order to find this.
Long Running HTTP Process - How To Put In Separate Process
Jul 21, 2010I know that similar questions have been asked all over the place, but I'm having trouble finding one that relates directly to what I'm after.
I have a website where a user uploads a data file, then that file is transformed and imported into SQL. The file could be up to 50mb in size, and some times this process can take 30 minutes or sometimes even longer.
I realise I need to palm off the actual work to another process, and poll that process on the web page. I'm wondering what the best approach would be though? Being a web developer by trade, I'm finding all this new Windows Service stuff a bit confusing, and I just wanted somewhere to start.
So:
Can I do / should I being doing this with a windows service? if so, how?
Should I use WCF? If this runs under IIS, will I have problems with aspnet_wp.exe recycling and timing out my process?
clarifications
The data is imported into sql, there's no file distribution taking place.
If there is a failure, it absolutely MUST be reported to the user. The web page will poll every, lets say, 5 seconds, from the time the async task begins, to get the 'status' of the import. Once it's finished another response will tell the page to stop polling for status updates.
queries on final decision
ok, so as I thought, it seems that a windows service is the best idea. So as to HOW to get it to work, it seems the 'put the file there and wait for the service to pick it up' idea is the generally accepted way, is there a way I can start a process run by the service, without it having to constantly be checking a database table / folder? As I said earlier, I don't have any experience with Windows Services - I wondered if I put a public method in the service, can I call it somehow?
Configuration :: "Access Denied" Exception Causing W3wp.exe Process To Crash
Feb 23, 2011We recently migrated our ASP.NET 2.0 application to ASP.NET 4.0. It is running on Windows 2003 with IIS 6.0. After migrating, we have found that the ASP.NET 4.0 worker process w3wp.exe crashes intermittently with an 'Access Denied' exception. The stack trace of the exception does not point to any code written in our application. We are clueless as to what could be causing this. The worker process crashes when it makes a remoting call over http.
Event Type: Error
Event Source: ASP.NET 4.0.30319.0
Event Category: None
Event ID: 1325
Date: 2/22/2011
Time: 10:01:03 AM
User: N/A
Computer: SYS01
Description:
An unhandled exception occurred and the process was terminated.
Application ID: /LM/W3SVC/1/ROOT/Remoting
Process ID: 4660
Exception: System.TypeInitializationException
Message: The type initializer for 'ConvertClass_1' threw an exception.
StackTrace: at ConvertClass_1.Finalize()
InnerException: System.Management.ManagementException
Message: Access denied
StackTrace: at System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStatus errorCode)
at System.Management.ManagementScope.InitializeGuts(Object o)
at System.Management.ManagementScope.Initialize()
at System.Management.ManagementObject.Initialize(Boolean getObject)
at System.Management.ManagementClass.CreateInstance()
at ConvertClass_1..cctor()
For more information, see Help and Support Center at [URL] We have tried options like giving permissions to ASPNET account in the WMI services under 'Component Services' but to no avail. Has anybody else faced this issue?
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May 10, 2010suddenly, with my Visual Studio 2008 I can no longer debugging my web applications (ASP.NET 3.5). I obtain this error: Unable to start debugging on the web server. Click Help for more information. Auto-attach to process [8360] w3wp.exe' on machine 'DELL' failed. The weird thing is that I haven't done special changes to my IIS.
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Dec 1, 2010Oracle has simple, useful and free tools for attaching to a process and monitoring its SQL statements but I can't anything similar for SQL Server. This is incredibly useful across a number of scenarios, particularly when dealing with third-party assemblies (1). ANTS 6 seems to support something like this (2), though it doesn't allow you to view the stack-trace that lead to the query as dynaTrace does. I don't think dotTrace tracks parameter values, either.
Surely there's a widely available option for profiling SQL application-side?
(1) -
[URL]
(2) -
[URL]
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View 1 RepliesWhen Encountering An Access Violation - W3wp.exe Crashes And Restarts Repeatedly Until The Application Pool Is Stopped
Feb 8, 2011I have a CLR 4 WCF service hosted in IIS 7.5 (Windows Server 2008 R2), using the WebHttp binding (with [WebGet]). The service calls into an unmanaged component implemented in C++ (Visual Studio 2010). I deliberately added an access violation inside the unmanaged component (by calling delete on a pointer repeatedly, calling methods through a deleted pointer, etc.) to test dump file generation settings. The access violation crashes the w3wp.exe process, which is not surprising considering "Corrupted State Exceptions" in CLR 4. However, when the process restarts (due to warmup and always-on settings in IIS), the same request seems to be replayed to the service so that it crashes the w3wp.exe process again. After a few times (governed by the "max failures" application pool setting) the application pool is stopped.
I'm using the browser as the test client, and while the restart sequence is underway the request is still in flight. When the application pool is stopped, the request returns with 503 Service Unavailable. I can work around the problem by placing try...catch block around the code and using the [HandleProcessCorruptedStateExceptions] attribute. When I do that, the w3wp.exe process does not crash. However, this is not the desired behavior -- I want the process to crash (an access violation or a memory corruption is bad enough) but I want it to restart into a clean state and not have the request replayed. I was not able to reproduce the problem using the BasicHttp binding.
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View 1 RepliesC# - After Deploying 4 Web Application To IIS6 Server Worker Process Recycles Cause It To Stop Working Most Of The Time?
Jul 8, 2010This is a really odd situation, so hopefully I can explain it well enough.
I am deploying an ASP.NET 4 webforms application to a Windows Server 2003 SP2 server running IIS6.
Here's the problem -- when the application pool recycles its worker process (w3wp.exe), about 80% of the time, I will get an ReflectionTypeLoadException error trying to access any page in the app that contains an EntityDataSoure every time I try to view it.
However (this is the interesting part) -- the other 20%, it works just fine. I've actually resorted to turning off recycling the worker process entirely for this application pool and just add/remove whitespace from web.config forcing the site to recompile until I get a "good" w3wp.exe.
If this isn't clear, what I'm saying is: the actual worker process doesn't work at all for pages containing an EntityDataSource for about 4/5 times it starts, but still manages to serve all other pages just fine. Once you get a worker process that manages to serve a page with an EntityDataSource, it works every time until that process gets recycled.
My question is, how can I debug this? It works fine on my dev machine, it works fine on the server as long as you get a good process running, but iisreset or a server restart or anything that kills the worker process is almost guaranteed to cause the site to not come back up and throw this ReflectionTypeLoadException.
[Code].....
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I m using this code-
Byte[] bytes = (Byte[])ds.Tables[0].Rows[r][1];
MemoryStream memStream = new MemoryStream();
memStream.Write(bytes, 0, bytes.Length);
System.Drawing.Bitmap origBMP = new System.Drawing.Bitmap(memStream);
System.Drawing.Bitmap newBMP = new System.Drawing.Bitmap(origBMP, 100, 150);
System.Drawing.Graphics objGra = System.Drawing.Graphics.FromImage(newBMP);
objGra.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
objGra.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
origBMP.Dispose();
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newBMP.Dispose();
objGra.Dispose();
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Mar 18, 2010In an asp.net web form, I keep getting a connection reset error message. The page is doing a some long running processing (about 2-5 minutes).
I have no problem when the web request comes from the same machine as the web server. But when the request originates across the network, I get a connection reset error about 1:30 or 2 minutes into waiting for a response.
I have set the in web.config for this application and put the application it's own application pool.
What else can I try?
Edit
The purpose of this page is to accept input from the user, calculate something, and send the result back to them. The long running calculation isn't something I can offload until a later time.
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Files will be uploaded once per month for each group of users of the system and the next time the user logs on after the upload I would like the application to reflect the new data. I don't want to check for a new upload when each user logs on because the processing could take a log time.
The uploads are automatic from multiple other computer systems and not done by any user.
The Application is hosted (by GoDaddy) so I don't have full control of the server.
Is there any way to have a process running all the time in the background and if so how? The application is written in VB.net.