Windows Service Adn High CPU Usage?
Nov 2, 2010
I am working on a windows service and I am looking for a better solution to an issue with high CPU usage. The service needs to only 'run' every minute or two to gather some db data and do some light processing. Right now I have it running in a separate thread in the service application using the BackgroundWorker. In that thread, I do a Thread.Sleep(30000) after each db iteration. This has taken care of the CPU issue (obvious) but I am let thinking there is a better way. This works fine, I can still cancel the service without issue etc. however it feels wrong. Blocking that thread seems bad.
That being said, what is the best way to actually do this? I don't want the loop to just constantly run, I only want it to do work on a somewhat regular time frame. Would running this in a timer_elapsed event handler be a better way?
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May 3, 2009
I have a program that uses low-level keyboard hooks, because it's a program that needs to be able to catch keystrokes, even when holding down capslock or what so ever.
Anyway, I figured out (by making a sample program running at the same time on purpose consuming 95% CPU by making an infinite loop with nothing in it) that low-level keyboard hooks stops working if the CPU usage is that high, and you do a lot of typing what so ever.
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Jul 26, 2009
Why does CPU usage jump so high when a WebBrowser control is navigating to a page?Is there a way to drop CPU usage?
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May 18, 2011
the page at [URL] provides a high bit rate quantum number generator web service and I'm trying to access that service.
However I could not manage to do so.
This is my current code:
CODE:
I'm having 403 forbidden error when I try to do a get request on [URL].
After debugging abit, I've realised that even though I've supplied a valid username and password, the response html that was sent after my POST request indicate that I was actually not logon to the system after my POST request.
Does anyone know why is this the case, and how may I work around it to call the service? Bump. can anyone get this to work or is the site just a scam?
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Jul 14, 2011
i have a Windows service that is hosting a WCF service through net.tcp and this is working great. I have also created a WCF service application. I am trying to add the net.tcp service reference to the service application. Then I add it to the GAC that goes ok but if I try to RegAsm the WCF service application to allow it to be called from Server.CreateObject I get the error:
Warning: Type library exporter encountered a type that derives from a
generic class and is not marked as
[ClassInterface(ClassInterfaceType.None)]. Class interfaces cannot be
exposed for such types. Consider marking the type with
[ClassInterface(ClassInterfaceType.None)] and exposing an explicit
interface as the default interface to COM using the
ComDefaultInterface attribute.
It does not work. I have tried to call it through a class library but this does not work either as the end point is not set correctly.
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Jul 23, 2009
I am trying to communicate with a Windows service on a remote machine on the network but i keep getting an exception saying the following: "System.InvalidOperationException: Cannot open Service Control Manager on computer 'machine001'. This operation might require other priviledges. ---> System.ComponentModel.Win32Exception: Access is denied.
[Code]...
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Sep 18, 2009
Is it possible to have a dotnet windows service which monitor other services and upon stop of any service, the monitoring service would be able to start the stopped service.
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Jul 7, 2009
In the past I had the indexing service installed on a Windows Server 2003 and used it to index files for my website. I did this by executing an OleDbCommand with a query and a connection string.How do I accomplish the same thing with the new "Windows Search Service" (Windows Server 2008) by using VB.NET? Does this work the same way so that I only need to change the Provider name which has been "MSIDXS.1" up to now? Case true, what is the new Provider name?
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May 3, 2011
When you create a Windows Service, you create a list of the services you want to start. The default is this:
ServicesToRun = New System.ServiceProcess.ServiceBase() {New Service}
Can you have multiple instances of the same Service class (that bind to different addresses or ports), like this?
ServicesToRun = New System.ServiceProcess.ServiceBase() {New Service("Option1"), New Service("Option2")}
Or will that cause problems? Should we use two different classes instead?
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Jan 16, 2012
Is there any way I can get the memory usage for all processes currently running on a machine in vb.net?
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Mar 3, 2009
We have a server with multiple services written in .Net 1.1 and 3.5 running on a Win 2003 server. Everything runs fine, but when we stop a certain service, an unrelated service stops. I have checked and neither has any dependencies. The service we stop is in 3.5, and the unrelated service that incorrectly stops is in 1.1. We get no error messages, nor event log errors, so we are baffled.Does anyone have an idea as to what may be causing this?
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Nov 17, 2011
I am using this method to install windows service
processInstaller = New ServiceProcessInstaller()
serviceInstaller1 = New ServiceInstaller()
serviceInstaller2 = New ServiceInstaller()[code].....
How can I get the account name after whenever the service is started ?
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Apr 5, 2012
I created a VB.Net application that will read from excel file and put the data into a table.I used an excel sheet which has 3 columns and 65000 rows.Before starts reading the excel my machine's CPU Usage is around 15%, but during reading the CPU Usage jumps upto 95%.
Private Sub readFromExcel(ByVal fileName As String, ByVal sheetName As String)
Dim connString As String = "data source=XE; user=test; password=test"
Dim con As New OracleConnection(connString)[code].....
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Jul 20, 2009
I need to add an option to a program of mine that enables "High Contrast" mode in windows XP.
Just like the picture below, but programatically
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Jun 25, 2009
I am using a windows service and tried to copy some file as below,System.IO.File.Copy("Z:abc.txt", "C:helloworld.txt")Note: Z: is a map drive from another host in 1 LAN (same LAN)I got error, "Could not find a part of the path 'Z:abc.txt'."But when I tried it at a simple application using windows application, it works with the same code as above.
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Jul 14, 2005
Tried to write my first Windoes Service yesterday with a certain degree of success but I couldnt install it.Upon running teh Install programme in the command line I was presented with a 'Set Service Login' window with a User ID, Password and Confirm Password text box.I attempted to use my windows login credentials but the install failed and was rolled back.Im using a computer on a company network with Win2k?
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Mar 10, 2009
I've created a windows service and started a deployment project for it. I have the project installer class in the service project and I've added the "Standard output etc.." from the service project as custom actions for the Deployment Project. When I attempt to install it, I get the error "Specified service already exists", which shouldn't happen (even though the service does exist) because the installer should be removing the old service and installing the new one.
I've checked that the versions are different, and that the Product Code is also different, also RemovePreviousVersions is set to true. Can anyone tell me why it isn't uninstalling my old service when I update then install again? .S: MODS: DO NOT MARK MY POST AS ANSWERED, IT IS RUDE, YOU HAVE NO IDEA IF YOU'VE ANSWERED MY QUESTION!Sorry, it gets ignored in my signature.Mods
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Mar 12, 2010
I have a .net Windows Service developed in VB.net. I have a settings file in the root directory called Connections.XML and I am setting the basedirectory [code]...
When I schedule the service this is working absolutely fine in my Windows XP machine. But when I installed the same service in our development server (Windows 2003 64 bit Server) for some reason it is not able to locate this file.
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May 3, 2012
It is possible to create windows service using windows form control in vb.net. give me the url or links. The windows forms control such as, Timer control, list-box, notify-icon control etc.
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Jan 19, 2010
I'm porting code that I wrote for use in a Windows Forms application to a Windows Service, but for some reason, the code that worked in the Windows Forms application is now throwing errors in the Service
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May 3, 2012
It is possible to create windows service using windows form control in vb.net.If yes then please give me the url or links.
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Aug 2, 2011
I have developed a Windows Service in VB.Net (VS2010) which is running on Windows7. I am trying to get "MainWindowTitle" for processes thru their process object but it returns empty.
[Code]...
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Jan 31, 2009
I'm writing a windows service (MacTimeFix.exe) to fix the Windows time on a Macintosh (it's like this: i live in Moscow (GMT+03:00), and Mac OS thinks that the system time is GMT+00:00 and adds 03:00 to it< and Windows thinks that system time is the local time).I need to execute my code when my VB app is closed. (it happens with the shutdown of Windows) The form is invisible (hidden), and the user mustn't click anything except windws shutdown button. It is a service. When i write a Form1_FormClosing sub, it works only on Alt+F4 or CloseButton and doesn't work when the app is stopped from Windows Task Manager or whatever also.I need a way to execute sub when app is closed with taskkill (without /force) or a way to execute a several app on Winshutdown.
Here is my code:
Public Class Form1
Dim SystemMary As String
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Me.Load
SystemMary = Mid(TimeString, 1, 2)
[code].....
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May 3, 2012
It is possible to create windows service using windows form control in vb.net. The windows forms control such as, Timer control, list-box, notify-icon control etc.
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May 18, 2012
I'm printing pdf files via the below code in a service. In Windows 7 this works really well, In Windows Vista, nothing happens at all? What am I doing wrong?
[Code]...
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Aug 5, 2010
I am working on a .NET Windows Service where I am trying to store settings that will be used when the service is started and while it is running. I have searched through posts on SO and found that using the Settings in the properties of the project is great for use with console and winforms applications. However, Google and SO are silent when it pertains to storing these settings with a windows service.
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May 5, 2010
Is there a way in which I could invoke a windows form from a particular windows service....??
Have created a windows service, installed it and everything is working fine... Now I want to design another windows form that I would call from the service while running it I know that with the help of ServiceController class we could interact with windows service from a windows application but am not sure of the other way round implementation....
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Aug 30, 2011
Is there a way to basically merge a Windows Forms Application with a Windows Service Application and allow the passing of parameters on start up to determine if it should start the standard GUI or launch as a system service
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Sep 21, 2010
How do i run program as windows service or by windows service.
For example :
run notpad.exe by windows service and user cant terminate it.
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Feb 17, 2009
is it possible to take and run vb.net windows application setup as windows service...if possible means how to take and run vb.net windows application setup as windows service....is it possible to run the vb.net windows application setup automatically 5 mins once....if possible means...how to run vb.net windows application setup automatically...want to run 5 minutes once automatically..
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