It seems that by default, ASP.NET 3.5 running on IIS 6.0 does not do any parallel processing whatsoever. With a quad-core system and a test webforms application that runs an infinite while loop on the server, CPU usage never goes higher than 30% regardless of how many clients are connected and independently running the while loop.What are my options for enabling parallel processing?
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I have windows service which need to execute around 10000 schedules (need to send/execute data to all the members).
For one member it's taking 3 to 5 seconds for 10000 schedules it's taking around 10 minutes or so..
But I need to execute all these schedules in one minutes.
I have a Default.aspx program that contains a Treeview with a SiteMapDataSource. I also have a web.sitemap loaded up with urls. When I run the deafult app I get the tree layout that matches the numbers of options but no text on any of the options to click.
View 1 RepliesWe are in the process of building a huge site. We are contemplating on whether to do the processing of HTML at server side (ASP .Net) or at the client side. For example we have HTML files which acts like templates for the generation of tabs. Is it better for the server side to get hold of content section (div) of HTML load the appropriate values and send the updated HTML to the browser or is it better that a chunk of data is passed onto client and make Javascript do the work?
View 2 RepliesLet'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...
View 2 RepliesI have a method that I call 8 times with different parametres.I use
AvailableYears.AsParallel()
.Select<Int32,DateUsedByThread>(x => GetDataForYearWorker(x,CIF))
.ToList();
GetDataForYearWorker gets the response from a webservice synchronously. It uses very little computing power on my asp.net application, but it ussualy takes 3-5 sec for each webservice response. Because the calls to the webservice are independent of eachother, I want to make tham all at the same time. But it looks like only 2 threads can run at the same time. Why is this and how can I have 8 threads working at the same time?
We are using 6 iFrames on our page. They fetch data from couple of external web services and an internal WCF service and display the data. There is a separate aspx page built for each of the iFrames. From our perf monitoring we found out that at any point only two threads are executing in parallel. Not all 6 threads get executed. What can probably be cause for this? Is there any restriction that more than 2 threads can't be created in parallel? Is there any configuration where I can change this?
View 3 RepliesI'm working on an ASP.NET MVC application that uses the Google Maps Geocoding API. In a single batch there may be upto 1000 queries to submit to the Geocoding API, so I'm trying to use a parallel processing approach to imporove performance. The method responsible for starting a process for each core is:
public void GeoCode(Queue<Job> qJobs, bool bolKeepTrying, bool bolSpellCheck, Action<Job, bool, bool> aWorker)
{
// Get the number of processors, initialize the number of remaining
// threads, and set the starting point for the iteration.
int intCoreCount = Environment.ProcessorCount;
int intRemainingWorkItems = intCoreCount;
[Code]...
This is based on patterns document I found on Microsoft's parallel computing web site. The problem is that the Google API has a limit of 10 QPS (enterprise customer) - which I'm hitting - then I get HTTP 403 error's. Is this a way I can benefit from parallel processing but limit the requests I'm making? I've tried using Thread.Sleep but it doesn't solve the problem.
Currently we are developing an ASMX, ASP 2.0, IIS 7 web service that does some calculations (and return a dynamically generated document) and will take approx. 60 seconds to run.Since whe have a big machine with multiple cores and lots of RAM, I expected that IIS tries its best to route the requests that arrive in its requests queue to all available threads of the app pool's thread pool.But we experience quiet the opposite:When we issue requests to the ASMX web service URL from multiple different clients, the IIS seems to serially process these requests. I.e. request 1 arrives, is being processed, then request 2 is being processed, then request 3, etc
View 2 RepliesI have a static class with a static get property, and in this property, I do this:
// property body
{
// HttpContext.Current is NOT null
Parallel.ForEach(files, file =>
{
// HttpContext.Current is null
var promo = new Promotion();
});
// HttpContext.Current is NOT null
}
This static class doesn't undergone type initialization until a view uses this property.
The problem is that Promotion's static constructor, which is initialized the first time a new Promotion() is created within the Parallel.ForEach(), uses HttpContext.Current. When promo is instantiated within the scope of this Parallel.ForEach(), HttpContext.Current is null, and new Promotion() therefore causes an exception.
HttpContext.Current is not null within the static get property because it's not called until the view uses it (and there is therefore a HttpContext.Current).
If Promotion used HttpContext.Current in its instances instead of its static members, I could probably just pass HttpContext.Current into the new Promotion() constructor:
var context = HttpContext.Current;
Parallel.ForEach(files, file =>
{
var promo = new Promotion(context);
});
But since static members of Promotion need HttpContext.Current, I can't. I could probably redesign the Promotion class to change the static members that need it to be instance members, but they are static for a reason--there would be a large performance penalty if all the members that were static had to be defined instead on each instance each time a new Promotion was instantiated.
What are the possible workarounds for this? I didn't realize HttpContext.Current would be null within the scope of Parallel.ForEach().
I am seeking your expertise in ASP.Net with regards to multi-thread support of WebService in a scenario , that is If a WebService-Client is making simultaneous calls from the same process, the requests will be serialized at the WebServices so that only one-call will execute at any one time , on the contrary, if those calls are sent from different WebService-Clients ( Instances/Processes) , they are processed in-parallel by WebServices.
Have you ever experienced the same with ASP.Net, and what configurations/Settings should be followed, in order for a WebServices to concurrently process simultaneous calls form a single WebClient , when deploying a large number of Web-Clients' instances/processes is impractical in a project-context.
I am experimenting AsyncController feature. What I did is set up two tasks to run in parallel. As in the code below, the problem is that sometime all tasks finished and return successfully, sometime only one task finish and sometime each task finish half of it's work and return. It is weird, what did I do wrong?
[Code]....
I try to get an understanding of the performance of a web page and use Trace.Write
Problem is that I use Parallel.Invoke and starts more threads where I would like to report back using Trace.Write
Parallel.Invoke(() => Chart1AndLegend(param),
() => Chart2(param),
() => Chart3(param),
() => Chart4(param));
I have realized that Trace.Write is not a good way of tracing as it is gives you the time since last entry which makes no sense if more threads are writing.
I've got a WCF web service that runs fine at the moment but there is talk about using it very heavily soon. As part of it's normal process it writes a file out, then reads it back in again (don't ask why, I know it's stupid). I'm concerned that if we start hitting it with lots of requests then the following might happen.
1. Request 1 writes the file out.
2. Request 2 comes in and overwrites the file.
3. Request 1 reads the file back in but this is now the wrong file.
My understanding is that the requests would naturally queue up so that request 2 wouldn't start until request 1 had finished, but I'm not totally sure.
I've got about 30 projects in VS 2008 and we are finally starting to upgrade to 2010. I get change requests pretty regularly so I'm likely to have to make changes to projects that are still in 2008 after VS 2010 is installed. Is it possible to intall VS 2010 without messing up the VS 2008 install? If so is there any particular trick to it so they live side by side or do they automatically do parallel install in different directories?
View 3 RepliesWhen I serve an ASP.NET page, can I render the various controls on the page in parallel?
I have a few Telerik controls (RadGrids) on the page and when I step through the page being loaded, it seems as though the controls are databound and rendered serially.
Maybe this behavior is because I am hooked in with the debugger.
Is there anyway to load the page and have select controls build on separate threads? Is that even conceptually possible or must it be done sequentially?
On our webform, I do I remove the vertical lines parallel to each field column?
Visit the webform at [URL]
View snippet code, below:
[Code]....
I have a dropdownlist inside a DETAILSVIEW....now when i select one particular option. a textbox should open up and enable me to enter a value in it and when i click insert button of the detailsview..the value i entered in the textbox shud enter the database and not the value i selected in the dropdownlist...how do i go about it....also how do i access the ID of the control inside the detailsview.
View 2 RepliesI have an Intranet site reading the windows user name and using it for authentication in the website.
My code works locally but does not read the login name when hosted using IIS 6 on Windows Server 2003 with anonymous access checked. If I un-check anonymous access then in Firefox I keep getting a pop up for username and password which never ends. In IIS 6 it is set to framework 4 and has its own application pool.
User.Identity.Name -returns blank on the server but works fine locally
web.config:
<authentication mode="Windows"/>
<identity impersonate="true"/>
I have an older 3.5 webforms site that works fine on the same server..
how to disable/enable file sharing as well as the script for the enabling/disabling Printer sharing.
View 1 RepliesI am toying with the idea of enabling CLR on my SQL server, using EXEC sp_configure 'clr enabled', 1
However, I am sharing my database server with several other developers and their projects. I've heard vaguely that their might be security issues with enabling this.
Does anyone know what these issues might be? Is CLR safe to use on SQL Server?
The general idea is that a LinkButton called InsertButton is disabled by default when the page renders and a div called divMainForm is styled with display: none. If a different button is clicked, a jQuer function is called that toggles the visibility of divMainForm. At that time, the InsertButton should also be enabled. I've tried several variations of this function:
[Code]....
The divMainForm toggles with no problem. I can't seem to find the right combination to a) determine if divMainForm is visible or not and b) enable the InsertButton. I've tried the above and also
.css("display") == "block"
.is(':visible')
No errors but none of them seem to detect the status of the div correctly or enable the button.
once again (as a novice to Visual Studio/C#/ASP, coming from a Delphi background) I am struggling to find an answer to what I imagine must be a simple problem?
I have a webpage with only 2 controls, Textbox1 and Button1. On the Page_Load , I have a line of code which says:
[Code]....
All I want to do is to be able to enable/disable the button depending upon whether or not Textbox1 contains anything. As a newcomer, I thought the answer was simple:
[Code]....
but I should really have known by now that there is NO such things as "simple" when it comes to Visual Studio / C# / ASP for someone transferring from Delphi after 8 years!!
From googling, I can see that if I set the value of AutoPostBack for TextBox1 to true then the button will be en/disabled when control leaves the TextBox. But surely there must be a way to do this while control remains with the TextBox?
I was wondering if any of you had the steps that would enable DoD CAC authentication in IIS 5.1 (XP Pro). I have never done this and am looking to set up a dev environment on my laptop for a CAC enabled website. What is the mechanism that would actually prompt me for a cert if I accessed a website on my laptop? I have read that selecting accept or require client certificates should do this but it doesn't. I just get a 403.7 error saying client certificate required.
View 1 RepliesAs stated in http://forums.asp.net/t/1535916.aspx the unit tests are missing from the ASP.NET MVC 2 RTM source code, but are available on CodePlex at
http://aspnet.codeplex.com/releases/view/41742).
After installing ASP.NET MVC2 RTM on Visual Web Developer 2008 Express, apparently unit tests are not enabled for VWD - when I create a new MVC2 project I don't get the "Create Unit Test Project" dialog box where I can say"Yes, create a unit test project".(I thought I was presented with that dialog box in earlier versions of either MVC2 RC or MVC1, but maybe not...)
Given the source code on codeplex, is it possible to use that to enable unit tests for MVC2 for VWD Express? If so, are the steps one have to take detailed somewhere?
