I have a doubt on IIS 6.0 worker process and Application pool.
I am having two web application which is been hosted on IIS 6.0 with different port number. Also I am created and assigned an Application pool to that applications. That application pool has configured for 2 worker process. Now what is my question is? when I am running that two applications from the browser, How that application pool will handle them? whether that two worker process will be assigned to one application or both.?
Please share your idea...
Thanks in Advance...
The worker processes are specific to each application pool. If you specify one application pool to have 1 worker process it will have only 1 worker process. If you specify another application pool to have 2 worker processes it will have 2 worker processes. You should notice that the properties screen is specific to an app pool.
You can see which application pools are using which worker processes using the following process;
• Start > Run > Cmd
• Go To Windows > System32
• Run cscript iisapp.vbs
• You will get the list of Running Worker ProcessID and the Application Pool Name.
You should see that if one of your app pools is set to use 2 worker processes it will have two entries in the list against the same app pool name.
Instructions and reference for above and also listing running worker processes in IIS7.
Related
SQL Server Profiler is showing me the process Id for a particular database accessor.
Windows Task manager shows me that that process Id belongs to W3wp.exe.
How can I tie this back to the web application? (I have multiple web applications running on this server.)
You could use the iis manager worker process feature to check which process belongs to which application.it shows you all running worker processes and some basic info, including ProcessId.You can match that ProcessId to the Processes tab in Task Manager.
1)Open iis manager, select the server node.
2)Double click on the worker processes feature.
another thing you could try is run below command. it will show the process with the application pool name:
%windir%/system32/inetsrv/appcmd list wp
I have an asp.net mvc application deployed in IIS. Sometimes its application pool worker process hangs so I would like to know if there is a way to monitor a specific IIS worker process using windows performance monitor? If so, what indicators I have to monitor?
As far as I know, we could add counter in the process monitor to figure out the Process identifier of the process.
You could right click the performance window and select counter.
Then you could choose the was_w3wp and select the process id w3wp process.
I have a website in IIS 8.5.9600.16384, we communicate with thousands of mobile devices through cyclic synchronisation and through SignalR 2.3.0.
This morning we had an application pool reset during working hours, which caused the SignalR to call "OnReconnect" of all our mobile devices at the same time.
I though that IIS started new processes first and then killed the old, not having downtime.
Can somebody tell me exactly what happens when IIS recycles it's application pool on the SignalR side? And in which cases can there be a connection downtime? (ex : if the server is busy?)
Edited : The application pool was recycled by IIS because of the "time limit". The IT team will change this setting so that the application pools reset every day at night time when it will have a lower impact on our applications.
A worker process with process id of '8720' serving application pool 'DefaultAppPool' has requested a recycle because the worker process reached its allowed processing time limit.
Also confirmed that disallowOverlappingRotation is not set to True. Any hint would help.
A few years later, I'm still getting some problems with the application pool recycle and SignalR. We are occasionally seeing thousands of re-connections of SignalR while the application pool recycle occurs, opening more than 60k TCPIP ports and causing a crash in IIS.
We managed to have it run "okay" for quite some time but it still crashes. Any hint would help. thanks
I'd first identify how IIS was reset. If you experienced a crash or performed an IISReset, the processes would be down before a new one stood back up. If on the other hand you configured AppPool recycling, then the overlapping processes should occur as you mention. I would check the System Event Log for recycling messages. Note that not all recycle reasons are logged by default.
You may also check to make sure disallowOverlappingRotation is not set to True.
Specifies whether the WWW Service should start another worker process to replace the existing worker process while that process is shutting down. The value of this property should be set to true if the worker process loads any application code that does not support multiple worker processes.
https://learn.microsoft.com/en-us/iis/configuration/system.applicationhost/applicationpools/add/recycling/
I read on some other sites that IIS creates 1 w3wp.exe process for each application pool. My server has 5 app pools, and 2 of them have an application. But in task manager I only see 1 w3wp.exe. Can anyone explain why?
Here is a screenshot:
Run the following command at command prompt and you get even more info,
%windir%\system32\inetsrv\appcmd.exe list wp
Then you will see which worker processes belong to which application pools.
When you set an application pool's Maximum Worker Processes attribute in IIS are you actually setting the number of processes or the number of threads?
These are processes (w3wp instances). Each process will have multiple threads.
ASP.NET Web Garden - How Many Worker Processes Do I Need?