How Does IIS Handle Large Volume Of Requests
Jul 26, 2010
I have a standard ASMX web service which uses a lock object to process the first request it receives and reject other requests that come in before processing completes. The web service is hosted on a Windows Server 2003 box with a single-core processor. To test whether this works as expected, I wrote a client that spawns 100 threads. Each thread makes an asynchronous POST call to the web server (i.e., HttpWebRequest.BeginGetResponse()). From my own logging, what I'm seeing on IIS is that two threads are spawned. Let's say thread IDs 1 and 7. Thread 1 is assigned a small number of requests. It accepts and processes them, one after another. Thread 7 is assigned a large number of requests. It rejects them. Does anyone have theories on the following: Why are two threads spawned? And not four or a hundred? Why does there seem to be thread discrimination? Thread 1 looks like it has control of the lock object at all times.
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Jul 26, 2010
How Does IIS Handle a Large Volume of Requests
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Mar 19, 2010
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Nov 19, 2010
I'm creating a web page that will show a form that allows a user to query a database and then page backwards and forwards through the data. In other words one record of the returned data will be displayed on the form and the user can move forward to display the next record or back to display the previous one.
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Jan 20, 2010
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The code creates the content for the email in a string.
It then selects a list of email address to send to.
Looping through the data via a datareader it picks out the email address and sends an email.
The email sending is done by a separate method which can handle failures and returns it's outcome.
As each record is sent I produce an XML node in an XML document to log each specific attempt to send.
The loop seems to end prematurely and the XML document is saved to disk.
Now I know the code works. I have run it locally using the same SMTP machine and it worked fine with 500 records. Granted there was less content, but I can't see how that would make any difference.
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Mar 23, 2010
I'm developing a web app for which the client wants us to query their data as little as possible. The data will be coming from a Microsoft CRM instance.
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Dec 27, 2010
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Mar 3, 2011
ASP.NET MVC newbie question:
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[URL]
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Jun 24, 2014
This is sort of a continuation of a previous thread: View thread
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Mar 8, 2011
This works in other browsers but not in chrome. I am trying to allow users to upload large files and have an ajax call to update them on the progress of the file upload.
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Jun 16, 2010
I need to make my IIS6 to handle sub domain request to the main website so that i can handle it by using HTTPHandler
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Apr 5, 2010
How do you handle ajax requests when user is not authenticated?
Someone enters the page, leaves room for an hour, returns, adds comment on the page that goes throuh ajax using jQuery ($.post). Since he is not authenticated, method return RedirectToRoute result (redirects to login page). What do you do with it? How do you handle it on client side and how do you handle it in controller?
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Feb 13, 2011
Frameworks like Node.js, Tornado, and Twisted let developers create server-push applications that supports large number of concurrent hanging requests (10k+). From what I understand, they all achieve this by not creating threads to service each hanging request.
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Jan 27, 2010
I have a folder structure that is odd and I need to find a way to deal with. Example, if you go to site.com/x/y/z/, I would like to have a script in the /x folder that grabs all incoming requests, even if the request was to /x/y/filename or /x/y/z/1/2/filename. Is it possible?
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Jun 22, 2010
I'm testing a very simple aspx page on Visual Studio's own ASP.NET Development Server(the local server). On the webpage there is a FileUpload control which can upload jpg file up to 2MB without problems. On uploading bigger files, the browser immidiately show "The web page cannot be displayed". It does not show any exception which really puzzles me. "The web page cannot be displayed" is normally caused by network problem, but in this case it's a local server and it can handle smaller jpg file fine. Whta's the problem here?
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Jun 18, 2010
What's the simplest and most effective way to selectively redirect HTTP requests to your ASP.NET page to its HTTPS equivalent? For example, if my page site URL is [URL], I want to redirect some (or all) page requests to [URL] What's the easiest way to do that?
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Mar 9, 2010
I am using media player to play audio and video. I am creating own button to increase and decrease the volume of the media player. working fine too.
Problem:
Even after reaches 0% volume its audible. If the player volume increase the system volume also be increased. Is it possible. How to achieve this task.
Control:
<object id="mediaPlayer" classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95"
codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701"
height="1" standby="Loading Microsoft Windows Media Player components..."
type="application/x-oleobject" width="1">
[Code]....
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Mar 8, 2010
I am using media player to play audio and video. I am creating own button to increase and decrease the volume of the media player. working fine too.
Problem:
Even after reaches 0% volume its audible. If the player volume increase the system volume also be increased. Is it possible. How to achieve this task.
Control:
<object id="mediaPlayer" classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95" codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701" height="1" standby="Loading Microsoft Windows Media Player components..." type="application/x-oleobject" width="1"> <param name="fileName" value="" /> <param name="animationatStart" value="true" /> <param name="transparentatStart" value="true" /> <param name="autoStart" value="true" /> <param name="showControls" value="true" /> <param name="volume" value="70" /></object>
Code:
function decAudio() { if (document.mediaPlayer.Volume >= -1000) { var newVolume = document.mediaPlayer.Volume - 100; if (newVolume >= -1000) { document.mediaPlayer.Volume = document.mediaPlayer.Volume - 100; } else { document.mediaPlayer.Volume = -1000; } } }
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Jan 15, 2011
My application stop due to this error: the filename, directory name or volume label syntax is incorrect.
Before all was working well. i made one small change and update the project in live server and this error started.
i tried the below solution but still same.
[URL]
When i rollback and run the old working project same error continue...
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Nov 25, 2010
I built an asp.net application using web developer express 2008 and sql express2008. The live version hosted on Godaddy, for the most part is working well. However, occasionally the users are reporting an error when the user volume is high.
Here is part of my web.config code:
<customErrors defaultRedirect="/Error/error.htm" mode="On">
<error statusCode="400" redirect="/Error/BadRequest.htm"/>
<error statusCode="404" redirect="/Error/NotFound.htm"/>
<error statusCode="408" redirect="/Error/TimeOut.htm"/>
</customErrors>
I have seen the other error pages work correctly and the error I am referring to above is the default error.It is possible that up to 10 users opening the same database table at the same time might be the problem? Would this be a potential cause of my unknown error? And if so what can I do about it?
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Oct 12, 2010
I have very basic knowledge of ASP.net. I am using following script to resize and image, but the problem is it increases the disk volume of resized image to almost 4 times or original image.
Example:
Original Image: 1024 x 769px and Disk space: 135 KB
Resized Image: 600 x 380px and Disk space: 825KB
Notice resized image becomes 825KB.
Quote:
[code]....
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Mar 21, 2011
How can I capture all the http requests for a particular URL in .NET?
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Mar 3, 2011
I have experienced some troubles when using the IIS server at my workstation with Windows 7. This is a development machine and I don't need to use it as a production server or anything, but for some tests it's quite usefull to see what happens when a lot of requests comes concurrently (in this case even in the same session).
I have learned that with my edition of Windows 7, the limit of requests is 10, but I thought it only means the limit of requests that can be served at any point of time. What I am experiencing instead, is that after firing 10 requests one by one, if the first one didn't complete before the last one was fired, it never completes. The whole IIS is dead, no further requests are put in the worker process queue (there are already 10 requests there hanging so it kinda makes sense) and the only way to go on is to restart.
Is this a standard behavior that cannot be changed on Windows 7 and does firing 10 requests really have to kill IIS (or at least the current worker process) ? Is there some way to change the configuration to fix it (without compromising the setup by creating bunch of worker processes etc.) ?
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Oct 21, 2010
Let's imaging there are 2 pages on the web site: quick and slow. Requests to slow page are executed for a 1 minute, request to quick 5 seconds.Whole my development career I thought that if 1st started request is slow: he will do a (synchronous) call to DB... wait answer... If during this time request to quick page will be done, this request will be processed while system is waiting for response from DB.[URL] One instance of the HttpApplication class is used to process many requests in its lifetime. However, it can process only one request at a time. Thus, member variables can be used to store per-request data.Does it mean that my original thoughts are wrong?Could you please clarify what they mean? I am pretty sure that thing are as I expect...
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Jul 26, 2010
When I open my page in Chrome and use the Resource Tracker, at the bottom of the list of requests, there are two GET requests to the aspx file. They take about 2 seconds each. Each request also causes a warning:
Resource interpreted as image but transferred with MIME type text/html.
why a page may be requesting itself, and why it is trying to use it as an image?
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