C# - How To Exploit Idle CPU Time In An IIS App Pool
Jul 13, 2010
I have an IIS 6.0-based C#/ASP.NET web site with a SQL server backend.I want to generate some computationally expensive reports (summaries, search engine indexes, etc...) in idle CPU time. I need the reports to be generated from WITHIN the IIS App Pool so it knows the proper configuration settings and (harder to fix) avoids the nightmarish security restrictions I've been placed under.
Can I start threads inside the AppPool's process that won't tie up the CPU, so it can continue serving requests unfettered? If so, how? What code and libraries?
I imagine it involves ThreadPool and thread priorities, but I couldn't find good coverage of low-pri threads and their interaction with the IIS web server and App pool.
[EDIT] [URL] discusses using a Timer for this but doesn't directly state that the .NET framework will insure that the Timer thread is low-priority. This might be a solution, but is that assured?
[URL]
[EDIT] Interestingly, Stack Overflow itself seems to use IIS background threads for my purpose:
[URL] in the comments, everyone says their (no longer used) technique sucks, but this one in the comments makes sense to me...
My ASP.NET website while trying to connect to the database for first time after a period of inactivity throws an time out exception.
I understand the connections in the connection pool get terminated after some idle time for some reason (Firewall or Oracle settings) and the pool or app doesn't have a clue about it.
Is there any way to validate the connection beforehand so that the first try doesn't throw an exception? I don't have much control over the DB or Firewall settings. So I have to deal with this is my application.(would prefer if there is any web.config settings)
I am using: ASP.NET 2.0. Oracle server 11g, Microsoft Enterprise Library DAAB to do all my DB operations.
I have a requirement to calculate the Web application idle time. Say the user doesnt use the web application for 15 minutes, then a message needs to be displayed to the user.
Got really strange Firefox issue. Using the Microsoft __doPostBack javascript function in web forms page. Used for tab control, we have got each tab click calling the __doPostBack function. Works ok on my dev machine with all browsers but got a colleague who has an issue if he leaves the page idle for circa 3 -4 minutes. After this delay if he selects a new tab which calls the __doPostBack function the call to theForm.submit(); just hangs and get requested timeout. No .net calls are seen in Firebug. The __doPostBack event is called just theForm.submit() function just doesn't execute. If he does not have this idle time works ok. It is also ok for him on all other browsers.
i made an web application for my client, he is from usa, I deployed application to [URL], at my local system, the project function proper. But what is happening that at main server the session is destroying automatically, before the idle time. I have been figuring out this problem for long but could not solved it. what may be the reason behind this session out. I am using in process session.
How to find the client idle time .i deployed the application in the server .whenever the client access the site then i need to find that client system idle time in asp.net .
I have IIS 7.5 running on windows 7 64 bit machine.
My problem is that in my web application after any page request if the page remains idle for more than 2 mins, it stops responding. For e.g. lets take the following scenario:
1. Initial page request
2. the page stays idle for 2 mins
3. Click a button to save data
4. It takes very long for the aspnet worker process to reach page_load, and firefox shows "connection was reset" message.
I put breakpoint on page_load. It strikes the breakpoint after a long time and also it does not go to the event handler of the button that was clicked.
The web application works perfectly if the page is not kept idle.
in my page i dessigned Updatepanel within that i placed some input controls(textbox, dropdownlist etc) within that updatepanel i placed one button. now the problem is on production if i idle some time after enter some data and press the button then the button click event not fired, then i refresh the page enter the input then press button then its fired, what is the problem? and how to resolve it? (i didnt included any triggers)
I have developed a web application in .net & if the web application is idle for some time & after that if we perform some action on that web page then it doesn't respond.
am getting "Time Out Expired,The Timeout period elapsed prior to obtaining a connecttion from pool".Please suggest suddenly i am getting this error in 10% of the pages.
If the leave the webpage (any webpage) on my web application for a while (say 15 min), if I again click on another page it takes a long time to load (20 seconds)
I had a look through the google chrome --> developer module and found that, it is the web page which is the culprit here and the 'LATENCY' time for it is 17 seconds !!! and the actual 'download' time is only 117 ms.
I have a page that have a combobox and a button, when the user select something from the combobox and hit the Go button they are redirected to the page with the desired variable.
[Code]....
The problem appears when the page was not used from more than 20 minutes and the user select something from the comboBox and hit Go Button the receive a page indicating the Error 404.The only thing that I try is to use a javascript code that Refresh the page every 15 minutes but is not nice to see a page refreshing without a reason.If someone can have a way to identify what can be done in this problem, Its going to be a huge help.
I am developing web application using ASP.NET and I want to close the current user session if the computer is idle for 5 minutes. Idle not means for web application only, Its full system that means if no keystroke received from keyboard for 5 mins.I got some info thru Google about Idle Tracker in VC++ but I dont know how to use that DLL in my web application. [URL] .... How to achieve this. I want to get the total computer active time and idle time thru asp.net for my employees productivity report.
I am using "cookies" to maintain session in my asp.net azure application.
What I want is that when a user logs in to my website and remains idle for 15 minutes it should automatically log them out and redirect them to the login page.
