Is there a way to get load information on Application Server? How much memory or CPU is being used at a given point? I want to either 1. Limit users to use specific functionality of ASP.NET 3.5 application or 2. Deny users from accessing the application saying "Server is busy at the moment"
View 4 RepliesI am hosting a solution with an outside company so getting them to troubleshoot or send me log files is not working.
Is there a way from code or Global.asax file that I can trap Memory usage from my web application when it reaches a certain amount? Then figure out what is using all the memory
Environment.WorkingSet incorrectly reports the memory usage for a web site that runs on Windows 2003 Server.(OS Vers: Microsoft Windows NT 5.2.3790 Service Pack 2, .NET Vers: 2.0.50727.3607)
It reports memory as Working Set(Physical Mem.): 1952 MB (2047468061).
Same web site runs locally on Windows Vista with a Working Set(Physical Mem.): 49 MB (51924992).
I have limited access to the server and support is so limited.
so i have computed the total memory by traversing with VirtualQuery.
Total of pages with state: MEM_FREE is 1300 MB.
(I guess server have 4 GBs of RAM and PAE is not enabled, max user mode virtual address is 0x7fff0000.)
So, i know working set is not only about virtual memory. But, is it normal to have such a high working set while its very low on another machine?
Is there a way to check the memory usage (consumption) of individual controls on a web form shown in a browser. Like Repeater Control, Multiline Text box etc. The reason is I am putting the repeater control in session and checking the status of controls, based on which I am doing further actions.
View 2 RepliesWe got "out of memory" issue on production servers. What API can we use to get live memory (physical and managed) usage of the ASP.NET application?
PS: we're forbidden to profile memory with tools.
I have really tried to Google it but only articles about how to troubleshoot memory issues come up. Before I start to troubleshoot, I would like to know if my web site's memory usage is really abnormal or not.
So it is an asp.net mvc 2 website that runs on IIS 7.5 in production. I guess normal memory usage depends upon traffic, so here are the numbers of an average day:
300 unique visitor
400 visits
3000 page views
I would be really happy to get some idea how much is the normal memory usage for this traffic. Also I would be curious to know how memory usage normally increases with traffic growth.
I have an ASP.NET app that scrapes data from a handful of external pages, parses the relevant bits and displays them in a table. Total data retrieved is 3-4MB and the resulting page is about 1MB. I am using synchronous WebRequest GetResponse for the retrieval, but the same problem existed using an asynchronous BeginGetResponse/EndGetResponse process.There is no database access, no session storage, no caching, but an in-memory list of about 100 objects (total 1MB of data), plus a good amount of AJAX (AjaxControlToolkit). This issue appears on the very first run of the app, even if I have restarted IIS.
The issue:
When I run the app on my dev computer, the maximum commit charge is about 1.5GB. The biggest user, measured by Task Manager's VM Size, is WebDev.WebServer.exe (600MB). The app runs perfectly.
When I run it on my rent-a-server (IIS 7.5, 1GB RAM), the maximum commit charge is over 3.8GB. The biggest user is w3wp.exe at 2.7GB. IIS grinds to a halt and spits out a timed-out error page.
Given my limited server budget and the hope of having multiple simultaneous users, I'm kind of in a panic.
Is this normal? If I bump the server RAM up to 4GB, will that be enough?
I have an ASP.NET 3.5 app that collects data from a handful of external pages, parses the relevant bits and displays them in a table. Total data retrieved is 3-4MB and the resulting page is about 1MB. I am using synchronous WebRequest GetResponse for the retrieval, but the same problem existed using an asynchronous BeginGetResponse/EndGetResponse process.
There is no database access, no session storage, but an in-memory list of about 100 objects/1MB of data, plus a good amount of AJAX (AjaxControlToolkit). This issue appears on the very first run of the app, even if I have restarted IIS.
The issue:
When I run the app on my dev computer, the maximum commit charge is about 1.5GB. The biggest user, measured by Task Manager's VM Size, is WebDev.WebServer.exe (600MB). The app runs perfectly.
When I run it on my rent-a-server (IIS 7.5, 1GB RAM), the maximum commit charge is over 3.8GB. The biggest user is w3wp.exe at 2.7GB. IIS grinds to a halt and spits out a timed-out error page.
Given my limited server budget and the hope of having multiple simultaneous users, I'm kind of in a panic.
On an ASP.net site at my place of work, the following chunk of code is responsible for handling file downloads (NOTE: Response.TransmitFile is not used here because the contents of the download are being streamed from a zip file):
[code]....
I've just read about the 'buffer' property of the Response object. If I set that to false, will that prevent the Response.BinaryWrite() calls from buffering the data in memory? In general, what is a good way to limit memory usage in this situation? Perhaps I should stream from the zip to a temporary file, then call Response.TransmitFile()?
EDIT: In addition to possible solutions, I'm very interested in explanations of the memory usage issue present in the code above. Why would this consume far more than 1MB, even though Response.Flush is called on every loop iteration? Is it just the unnecessary heap allocation that occurs on every loop iteration (and doesn't get GC'd right away), or is there something else at work?
I have a update panel combined with gridview with sorting and paging.
I go into task manager to monitor the memory usage of the worker process (w3wp)
What I do is just click on the sort buttons rapidly.
With each click the memory of the process increases with about 2 mb
So I go from 30 mb memory usage to about 90. Then it stops at remains there, no memory is freed up. I am not using caching or session/application state.
What can be causing this, is there a setting in IIS to reduce the mem usage?
I also used .net profiler to examine my app memory usage: 4 mb, so what is the other 86 used for??? Even though it repots 4mb, in task manager it says 90 mb, so this leads me to believe that the rest is namanaged memory which must be used by IIS in some way.
I would like to use output caching with WCF Data Services and although there's nothing specifically built in to support caching, there is an OnStartProcessingRequest method that allows me to hook in and set the cacheability of the request using normal ASP.NET mechanisms.
But I am worried about the worker process getting recycled due to excessive memory consumption if large responses are cached. Is there a way to specify an upper limit for the ASP.NET output cache so that if this limit is exceeded, items in the cache will be discarded?
I've seen the caching configuration settings but I get the impression from the documentation that this is for explicit caching via the Cache object since there is a separate outputCacheSettings which has no memory-related attributes.
Here's a code snippet from Scott Hanselman's post that shows how I'm setting the cacheability of the request.
[code]....
I'm using asp.net and chrome and the page becomes unresponsive after a while. When I look at the chrome debug, I see that memory usage increases to about 80MB and chrome popups a request to kill the page. The error counter spins and generates about 30,000 errors when the popup comes. What triggers the error is the call of an updatepanel. The error as displayed in chrome is "Failed to load resource".
The update panel: the user clicks on a button and the panel is refreshed. There's only one update panel on the page.
This is what I have:
function HistoryUIActions() {
$('.SelectDay, .SelectDay1Digit').click(function () { GetNewDate(this); });
};
function GetNewDate(thedateitem) {
var TheDay = $.trim($(thedateitem).html());
TheYear = 2011;
ThisMonth = 2;
DateString = ThisMonth + '/' + TheDay + '/' + TheYear;
__doPostBack('<%= TheUpdatePanel.ClientID %>', DateString);
};
function EndRequestHandler(sender, args) {
HistoryUIActions();
};
The errors compound on every postback: 1,4, 11, 26, 57, 120, 247.... eventually chrome kills the page. When I put a breakpoint in the function, it stops the code just after I press the button; then after it hits the __doPostBack line, it starts the GetNewDate function again several times by going back to the line of the click event, apparently executing it the number of times shown above.
I hav to show an image on the page, the image is generated vhen thu user sets some parameters. Now i have this image in the memore and I dont now how to show it without saving it on disk. I try to use DynamicImageControl but I dont know how to use it
View 2 Repliesi have a query that select random records in access database in terms of time : "SELECT TOP 10 * FROM Tbl ORDER BY Rnd(-10000000*TimeValue(Now())*[ID])" now i wish to convert this query for using in sql server 2005 such that return random records in term of time
View 5 RepliesI want to read some information from an xml file and store it ready in memory so that it can go out with every page response without being reloaded from the xml on every request.
What is the best way of doing this?
It looks to me like there are 2 options. Either create a class with static fields that the information is stored in. Or create a class with public fields that the info is stored in and create an instance of that class at application level.
Is that correct, are both of those options viable? or will I not be able to access the fields in the second method without creating an instance of the class in the code that responds to the page request(basically if you create an instance of a class at application level can you use that instance from within code anywhere in your website as long as it is public)?
I have a memory leak somewhere that I cant find. Every few days my server will crash, and just before that I log a ton of SQL errors stating that it is "out of memory".
I cant find it anywhere, all of my connections are being disposed like so:
[Code]....
Then I call the connection from my pages like so:[Code]....
That is all pretty straight forward. The connection is disposed because it is implementing the USING clause. I am opening the connection in my connection manager class, and not where it is being utilized?Or, could the problem be in the below method I am using to populate a SqlDataReader:[Code]....
Now, at first it appears as though this could be the problem because the Connection isn't part of a USING clause, however doesn't the 'Data.CommandBehavior.CloseConnection' pretty much do the same thing. This makes sure that the connection is closed when the reader is closed, right? Here is how I call that above reader from my login page code behind:[Code]....
So the DataReader will get closed even without the .Close() because it is in the USING, and the connection should get closed because I specified it in the ExecuteReader paramters right?
I am using ITextSharp to generate pdf on the fly and then saving it to disk and display it using Frame.he Frame has an attribute called src where I pass the generated file name.his all is working fine what I want to achieve is passing the generated pdf file to Frame without saving it to disk.
HtmlToPdfBuilder builder = new HtmlToPdfBuilder(PageSize.LETTER);
HtmlPdfPage first = builder.AddPage();
//import an entire sheet
builder.ImportStylesheet(Request.PhysicalApplicationPath + "CSS\Stylesheet.css");
string coupon = CreateCoupon();
first.AppendHtml(coupon);
byte[] file = builder.RenderPdf();
File.WriteAllBytes(Request.PhysicalApplicationPath+"final.pdf", file);
printable.Attributes["src"] = "final.pdf";
Server Error in '/' Application. Attempted to read or write protected memory. This is often an indication that other memory is corrupt.Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[code]....
We have a web application running which having around 100 users logged in, All clients are connected to server using websync. I was having requirement for keeping the session always live, so I am regenerating session when it is about to expire.
But after 3 or 4 days, I found cpu reached to 100% and application locked, then we need to restart the server to make it working.
We have a web application running which having around 100 users logged in, All clients are connected to server using websync. I was having requirement for keeping the session always live, so I am regenerating session when it is about to expire.
But after 3 or 4 days, I found cpu reached to 100% and application locked, then we need to restart the server to make it working.
I actually have a C# winform application which load images from my computer C://images/... with the Image object and the function Fromfile.
Image.FromFile(Path);
but in my web application (ASP)
<asp:Image ID="viewPhoto" runat="server" Width="550px" Height="400px"/>
I use the attribute ImageURL.
viewPhoto.ImageURL = Path
But the problem is that it doesn't find the correct path because with this way. The path will be http://localhost:3656/C://images....
I would like to load an image directly from my server to have the correct path for both of my applications.(web ASP and winform)
Image.FromFile(/images/myimage.jpg)
This actually doesn't work because the program doesn't find any photo in this path.
I came across a strange behavior with this property. I had a winform with 2 buttons "button1" and "close". In the button1_clicked event I had the following code. I did not put any code in the for loop
int len=ConfigurationManager.AppSettings.Count;
I need a book to recommend strategies for load-testing an ASP.NET application with SQL Server backend.Some info that may be useful:how to write a load test planwhat perfmon counters to use andtypical threshold valuesfinding bottleneck various load testing tools
View 2 RepliesI am working on a ASP.NET 2.0 application. I get the following exception sometimes when i access the web application. I believe it is related to the server where the application is hosted? Exception of type 'System.OutOfMemoryException' was thrown. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:
[OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.]
System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +0
System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +43
System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +127
System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +142
System.Reflection.Assembly.Load(String assemblyString) +28
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +46
[ConfigurationErrorsException: Exception of type 'System.OutOfMemoryException' was thrown.]
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +613
System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +203
System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +105
System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +178
System.Web.Compilation.BuildProvidersCompiler..ctor(VirtualPath configPath, Boolean supportLocalization, String outputAssemblyName) +54
System.Web.Compilation.ApplicationBuildProvider.GetGlobalAsaxBuildResult(Boolean isPrecompiledApp) +227
System.Web.Compilation.BuildManager.CompileGlobalAsax() +52
System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() +337
[HttpException (0x80004005): Exception of type 'System.OutOfMemoryException' was thrown.]
System.Web.Compilation.BuildManager.ReportTopLevelCompilationException() +58
System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() +512
System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters) +729
[HttpException (0x80004005): Exception of type 'System.OutOfMemoryException' was thrown.]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +8890735
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +85
System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +259
What can be the reason for this error and what to check on the code or the server?
I can not figure out what the problem is with my programming. There is no problem working locally, but uploading and making live is where this problem occures.
View 1 Replies