AJAX :: Calling Resource Files Many Times - Slow Performance
Mar 2, 2010Whenever I use ASP.NET AJAX it's calling Resource.asx files many times and it's affecting site performance. How can we avoid that?
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Ajax Request Times Out (or Is Really Slow)
Nov 15, 2010My basic structure is that I have a table on a page, which I want to reload without refreshing the entire page. So on clicking a button on the page it fires of this:
function RefreshMissionsAjax() {
//fade out the old table.
$(clientID('MissionsDisplay')).fadeOut(500);
//request the new value from the page (calls the GetIncompleteMissions() method in the MissionViewer.aspx.cs page)
$.ajax({
type: "POST",
url: "MissionViewer.aspx/GetIncompleteMissions",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
$(clientID('MissionsDisplay')).html(msg.d);
$(clientID('MissionsDisplay')).fadeIn(500);
},
error: function (xhr, ajaxOptions, thrownError) {
$(clientID('MissionsDisplay')).html('An error occured while trying to refresh the page data.');
$(clientID('MissionsDisplay')).fadeIn(500);
}
});
}
And I have in the code bedind of an aspx page:
[WebMethod]
public static string GetIncompleteMissions()
{
return GetHTMLTable();
}
This method just grabs some data, and creates a html table - nothing too fancy. When the returned table is small (a dozen rows or less) then it works like a charm. But when it gets larger, it takes a long long time. At 100 rows it can take 5 minutes to render the table. At 1000 rows I have left it for 30 minutes and nothing will happen after the fadeout. (NB - it loads fairly quickly on the pageload, before the ajax refresh is used, so it is not the actual server side creation of the table thats the problem).
This is my first real attempt at doing something like this, so I dont know if this is the best way to do it - it was just something i pieced together that worked great when i was testing with small datasets. Now, not so much.
Performance - Webforms W/ AJAX Slow Rendering?
Mar 1, 2010I have a Webforms, AJAX-enabled web page which, when rendering large amounts of data, is extremely slow to load in IE (we're married to IE - no other browser options). In an attempt to determine the source of the slowness, I viewed the HTML source (about 2.5 MB) and copied all of it (except for the Ajax JavaScript calls) to a blank .html file. IE renders this file MUCH faster than when the rendering happens through .Net. This seems to indicate that the AJAX JavaScript is slowing down the display of the page. Does this sound plausible? Any recommendations on improving performance here?
I've already eliminated as many UpdatePanel controls as I can from the page, but it doesn't seem to help with render time.Update... In the HTML source, I noticed that at the bottom of the screen, a call to WebForm_InitCallback() appears. When I executed this call directly through javascript:alert(WebForm_InitCallback());, the CPU spikes for 12 seconds before it completes! This call is here because I implemented ICallbackEventHandler to try to accomplish some traditional-style AJAX handling. Looking at WebResource.axd, that WebForm_InitCallback() method iterates through the entire form and attaches some kind of events to EVERY SINGLE textbox, checkbox, radiobutton, etc. So I guess I really need to abandon ScriptManager and UpdatePanel altogether here.
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View 4 RepliesLocalization :: How To Set One Default Resource File From Many Different Resource Files
Apr 7, 2010In our web application we need to keep various company's settings. For eg "DiamondProdRefIDCaption","Shippingpickup","ZipCodeCaption","DefaultCountry","AllowToEditInvoice", etcThese settings are different for various companies and are placed in web.config as key-value pair.Initially, we have tried do simplify this process by adding a company_settings table in the DB so as to allow us to add companies on the fly. However, this method makes it very difficult to add a new setting
<%$Resources:DiamondProdRefIDCaption%>
Performance - Application Slow But CPU Is At 40% Max?
Nov 19, 2010I have a strange situation on a production server. Connection for asp.net get queued but the CPU is only at 40%. Also the database runs fine at 30% CPU.
Some more history as requested in the comments:
In the peak hours the sites gets around 20,000 visitors an hour.
The site is an asp.net webforms application with a lot of AJAX/POSTs
The site uses a lot of User generated content
We measure the performance of the site with a testpage which does hit the database and the webservices used by the site. This page get served within a second on normal load. Whe define the application as slow when the request takes more than 4 seconds.
From the measurements we can see that the connectiontime is fast, but the processing time is large.
We can't pinpoint the slowresponse the a single request, the site runs fine during normal hours but gets slow during peak hours
We had a problem that the site was CPU bound (aka running at 100%), we fixed that
We also had problems with exceptions maken the appdomain restart, we fixed that do
During peak hours I take a look at the asp.net performance counters. We can see behaviour that we have 600 current connections with 500 queued connections.
At peak times the CPU is around 40% (which makes me the think that it is not CPU bound)
Physical memory is around 60% used
At peak times the DatabaseServer CPU is around 30% (which makes me think it is not Database bound)
My conclusion is that something else is stopping the server from handling the requests faster. Possible suspects:
Deadlocks (!syncblk only gives one lock)
Disk I/O (checked via sysinternals procesexplorer: 3.5 mB/s)
Garbage collection (10~15% during peaks)
Network I/O (connect time still low)
To find out what the proces is doing I created to minidumps.
I managed to create two MemoryDumps 20 seconds apart. This is the output of the first:
!threadpool
CPU utilization 6%
Worker Thread: Total: 95 Running: 72 Idle: 23 MaxLimit: 200 MinLimit: 100
Work Request in Queue: 1
Number of Timers: 64
and the output of the second:
!threadpool
CPU utilization 9%
Worker Thread: Total: 111 Running: 111 Idle: 0 MaxLimit: 200 MinLimit: 100
Work Request in Queue: 1589
Databases :: Very Slow Performance With Sql?
Nov 22, 2010I'm using MySql with asp.net 2.0. Every page witch has a database operation take long time to complete. How can i increase the performance.
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Feb 22, 2011There's a web app I've been assigned to, which is running very slow. It is a site that sells products so it is database driven, however even pages that do not query the database are loading very slow. The pages use master pages, and the code is in VB.NETI checked with fiddler and the time it takes to load basic (non database driven) pages are about 5.5 seconds on average.
What are some tools that can help me determine the cause of the slow speeds, and any recommendations as to how to speed it up, or potential issues that could cause it?UpdateSo I messed around with the code piece by piece as I wasn't getting anywhere with these tools. As soon as I remove master pages, and I include the same code that's on the master pages in the .aspx page itself, the speed improves drastically (approximately 5 times faster load times).What might cause the master pages to cause load times to slow down so much?
Performance - Slow First Page Load On Site?
Jan 20, 2010Every now and then (always after a long period of idle-time, e.g. overnight) when I access a site built using asp.net - it takes around 15 seconds to load the page (15 seconds before I see any progress whatsoever, then the page comes up fast).Further pages on that site, or refreshes, are quick as usual - they are also fast on other machines, only the first one seems to take the 'hit'.
Page tracing never through anything up (whole cycle was a fraction of a second) So my question is where else should I be looking? Perhaps IIS? Or could it still be my asp.net app and I'm just looking in the wrong place (the trace) for clues?As I don't have much control over the IIS server, anything I can check through asp.net would be more helpful, before I go ask that particular admin.
Improving Performance / User Is Complaining That It Is Too Slow?
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[Code]....
And here is the Stored Procedure:
[Code]....
Then when I run this, I get an error that the server timed out. Without calling this function to reference the stored procedure, the application runs well, users can log in/create accounts, etc. But something in the function and/or the stored procedure is timing out.
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Jan 26, 2010I have multiple projects that need to share resource files (.resx) Suggestions have been made to move resource files to a separate assembly and have web projects reference it. Is there an example of how to do this?
Do I create a new Class Library project and move App_GlobalResource folder inside of that? I don't think that will work because code classes that are generated for resource files are marked as 'internal' which means that they can not be accessed outside of this assembly.
C# - Use Various Culture Specific Resource Files?
Oct 19, 2010I have a website which currently uses EN-US and I also have resource file for french. what code should I need to write to make the application use the french version of the resource file.
The site is a commerce server and share point site that uses .NET
Localization :: Translation Of Resource Files?
Feb 16, 2010I have a multilanguage application and I use resource files (.resx). I hired a person to make the translation. My question is, am I supposed to give him the resource files in order to make the translation and how he will open the resource files? Obviously, he doesn't have a copy of Visual Studio! Is there any tool that I can give him in order to work with the resource files?
View 2 RepliesC# - Update Resource Files In Assemblie?
Jan 13, 2011the website i'm working on has resource files for a number of languages.The resources of the website are compiled in the website dll (i think?) and the resources from other, from the website, referenced dll's, are stored in subfolders of the in directory.So i have in the bin my website.dll, and a subfolder called es with the Spanish resources for the website.services project (called website.services.resources.dll) and so on.Now we have the site live, and there is a wish for a immediate change of one of the items in a resource file.As my .resx files are compiled, i have to change the resource in the dll.
View 2 RepliesEmbedded Swf Files Is Slow To Load Although The Size Of The File Is 1.60 Mb?
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Jan 9, 2011I need my site to be multilingual. So i have added resx to each page. Now the texts been taken from resource depends on chosen culture. Now my customer want to edit some translation from administration panel. Can resources can be edited in runtime? If they are - is it the best choise to do it that way?(Its seems to me strange i didnt see something lake that in any place)?
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Jan 14, 2011I have a project where I need different versions of the same site.
I need to accomplish this by having different versions of the same resource files.
I would like to store the different versions of the same resource files in seperate projects in the same solution. Then choose which project of resource files to use when I publish or compile.
I've been searching the net everywhere and my deadline is coming up.
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Nov 11, 2010I am working on a application which supports multiple languages and I am doing it using asp.net resources files. Now the problem is, its a product and each user wants to have their own translations.For Example there is a text say "Home"Some users want to say it "Home Page" and some wants to say "Main Page"
Is there any possibility to do create different resource files, for each users, for each page and then load them according to the user currently logged in?
Download Of Large Files Slow When Content-length Specified (IIS7)?
Feb 4, 2010I have an asp.net web page to serve large file downloads to users.
The page is hosted on IIS7, Windows Server 2008.
The strange thing is that users can download at good speeds (2MB/s) when I don't add a content-length response header but as soon as I add this header, download speed drops to somewhere around 35kbps/s.
This is the code:
[code]...
Of course I can leave the content-length out but the user will not know how big the file is and how long the download will take...which is annoying.