Performance Counters Incrementing Improperly Into Application?
Jul 23, 2009
I'm trying to weave a .NET performance counter into an application. When I call the incrementBy(value) method on my avg performance counter it is changing the RawValue of my base counter by value as well. I checked the variable names and think everything is correct. Then when I call increment() on my base counter it adds 1 to the rawvalue of the avgcounter as well as incrementing the base counter... adding insult to injury!
In code I'm using two different counters to measure the time a merge sort I wrote takes. I have a instantaneous counter for the elapsed time of the sort and an average counter.
Dim timePiece As New Stopwatch()
timePiece.Start()
MergeSort()
timePiece.Stop()
[Code] .....
I think I may be using the counters wrong, but why does changing the rawvalue of the average seem to also change the rawvalue of the base? i dont think that's supposed to happen.
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Jun 23, 2011
My first try was to init performance counters in an array, which didnt work. Then I read up on performance counters and from that reading, the constructors are such that performance counters cannot be put in arrays. What does one do for multiprocessing?
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Sep 23, 2010
I am trying to setup performance counters for CPU Usage and Memory Used.I would like a progress bar and a label to display the percentage.I have the below code and although it seems to be half working, there is something just not right.. The memory one seems to be working fine although the CPU one is acting strange.
[Code]...
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Jan 21, 2010
I've been trying to get memory information from the OS by using Performance Counters. Memory performance information is available from the memory manager through the system performance counters. Right now, I'm working on getting the different types of Kernel Memory, but I'm having issues getting others as well. Through Performance Counters, I've been able to get Paged Virtual and Nonpaged Kernel memory.
The article I mentioned above does not explain how to get the Paged Physical Kernel Memory. It only gives the two I mentioned and the total, which is just the two combine and isn't the Paged Physical. The information isn't straight forward, so I'm using a third party application to compare my results so that I get the correct information. The article gives me Pool Paged Bytes Kernel memory and I found out that it is the Paged Virtual Memory.
I'm declaring this and others like so: [Code] I've researched several other methods, but I can't seem to get anywhere with anything else besides Performance Counters. To sum it up, I'm looking for a method to obtain the Paged Physical Kernel Memory.
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Oct 25, 2011
Which is less resource-intensive (per se):
> Add controls/components (such as Performance Counters, Timers, etc.) to a project by dragging them onto the form and using them by setting the properties and using code to program what they do.
> Add controls/components (such as Performance Counters, Timers, etc.) to a project by using Dim x As New Performance Counter or Dim y As New Timer in code without actually dragging them from the Toolbox onto the bar at the bottom (under the Form Design).Or is there another way to do this that uses less CPU/RAM/Resources/etc.?
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Sep 23, 2010
I am trying to setup performance counters for CPU Usage and Memory Used.I would like a progress bar and a label to display the percentage.I have the below code and although it seems to be half working, there is something just not right.. The memory one seems to be working fine although the CPU one is acting strange.
Shared perfTotalMemory As New ComputerInfo
Shared perfFreeMemory As New PerformanceCounter("Memory", "Available MBytes")
Shared perfProcessorTime As New PerformanceCounter("Processor", "% Processor Time", "_Total")
[code]....
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Feb 16, 2009
when I try to publish my project, I have this error: Cannot continue. The application is improperly formatted.Contact the application vendor for assistance. [code]
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Sep 11, 2009
I just got put on a new project to design an app that will retrieve data from an excel data sheet that holds information from our VoIP server's call log. Conveniently, this call log is stored in a fixed location on the local drive that this app will be running on. After working on this for a bit, I knew right away I'm going to need someone smarter than I am...I got to the point where I can show data but heres the issue : Every time I am retrieving the date it shows it as, "08/27/2009 12:00:00 AM", how do i remove the unrelated time stamp? Here is my code in Visual Basic 2008 Express Edition:
Public Class Form1
Dim cn As System.Data.OleDb.OleDbConnection
Dim cmd As System.Data.OleDb.OleDbDataAdapter
Dim ds As New System.Data.DataSet()
[Code]...
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Feb 9, 2011
I am having a bit of trouble with a countdown timer I am creating. I work in a call center and the average handle time of each call is important, so I created a countdown timer for the agents to use to help them manage their call time. Along with a tab for the average handle time (AHT), there is a countdown timer for their break time, and also a stopwatch tab. It functions well, there is only one snag I am encountering. When I am on the "AHT" tab for example, the timer counts down from 8 minutes in the format of 00:08:00. (hours, minutes, and seconds are all in separate text boxes) When I click start to start the timer, rather than counting down from 8 minutes in this format, it goes to 00: 8: 0. Then it goes to 00:07:59 and counts down properly.[code]This isn't all of the code for the program, but it is the code for Timer1 for the AHT tab, and the code for the start button for the AHT.
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Oct 27, 2011
Possible Duplicate: Memory leak in .net application I am working on a desktop application in VB.net 2005.The application contains a timer with an interval of 1 min. Each time the timer ticks, a set of functions gets executed, mostly database related. Initially the application runs fine. In processes(Task manager) the cpu usage goes to 100% every time the timer is invoked. But the timespan is around 1 sec(negligible). However as the time passes and after around 20 hours the time span of timer_tick increases to something like 20-30 secs. In this period cpu usage is 100% and the application does not responds.Gradually the time span of timer_tick increases to 1 min and the cpu uses gets stuck to 100% and the application does not responds. All objects are properly disposed. Moreover, this issue is with pentium 4 processors. The application runs fine on core 2 duo.I am using DevEx controls in my application.The program runs fine with less records in database.I have run the CLR Profiler. The code seems to be fine.
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Jun 18, 2009
In my VB application,I am copying huge amount of data using VB string?This results in performance issue.What shoul I use in place of VB string to improve performance?
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May 20, 2010
I have single-thread windows form application written with VB.NET and targeting Framework 1.1. The software communicates with external boards through a serial interface, and it mainly consist of a state machine that run some tests, driven in a loop done with a Timer and an Interval of 50ms. The feedback on the user interface is done through some custom events raised during the tests.
The problem that is driving me crazy is that the performance slightly decrease over time, and in particular after 1200/1300 test operations. The memory occupied does not increase over time, it is only the CPU that seems interested by this problem. The strange thing is that, targeting framework 2.0 and using the same identical code, I do not have this problem.
I know that is difficult without looking at the code, but do you have suggestions how can I approach the problem? EDIT: I am really lost, after a couple of intensive work the application starts slowing down. The selected row is related to its process, if it could help.
EDIT2: Using the Windows Task Manager I detected that the Handles counter is increased by 1 at the end of each operation. I don't know if it is the cause but the application starts to slow down when the handles counter reaches about 1500 handles. I checked that all necessary RemoveHandler are called after each operation. Any idea?
EDIT3: I found that the handles problem is generated by the C++ library we are using to communicated with the serial device. It then happens both in .NET 1.1 and .NET 2.0. The difference, and that's strange, is that if the target .NET 1.1 the application slow down/freeze instead for .NET 2.0 I reached more than 30000 handles without loosing performances. Now I don't know if the problem is really caused by this lost handles, I will try to ask to the developers of C++ library to correct the problem and see if it solves the problem I am having on .NET 1.1.
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Oct 15, 2010
I'm using Visual studio 2008 and microsoft sapi in a forms application. I am using text to speech which works just fine however when the computer is speaking it "bricks" the application and the main ui is unresponsive until the computer is done talking then everything returns to normal. To counter this issue I tried using the background worker thread to establish the sapi on another thread however the form is still freezing when the computer speaks. I would like to note that at this point there is nothing on the form except a tabbed window and a few buttons the form is not performing any code what so ever other then the text to speech.
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Mar 25, 2009
Stupid question, but how do I get access to this Explorer? To create a performance session for Windows client application:(1) Open the solution in the Visual Studio IDE. (2) On the Analyze menu, click Launch Performance Wizard.(3) From the Which of the following available targets would you like toprofile? drop-down list, select the name of the application that you wantto profile, and then click Next. You can add more binaries later
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Jan 9, 2010
Until now, I have not create any massive applications using ASP.Net. However, I am looking to create an application that has the potential to be very performance intensive. So I am looking for some tools or best practices when it comes to performance. I would like to be able to know how to:
See my current performance (good or bad) View items that need fixing And being able to compare two performance variable items would be great as well.
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Apr 10, 2009
How can I improve the performance of a Windows Forms application?
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Jan 18, 2012
How can I improve the performance of a Windows Forms application?
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Jul 15, 2011
Currently I'm writing a VB.NET app and it's getting big, resulting in its become very slow.Is there any application (or plug in) that can test the performance in seconds?I mean, when I click a button and it displays a product, I want to know exactly how long it is gonna take.
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Aug 21, 2009
my friend is currently development an application using SOA Architecture, He sent me a picture with a lot of layers (10 almost) and he is worried about performance issues, the application is development on VB.Net 2.0 & 3.5 (some libs).
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Mar 3, 2010
I've developed a VB.NET application with Visual Studio 2008. The application communicates with SQL Server and processes a text file.
My question is about performance. While I run it from Visual Studio 2008, it takes 3 sec to complete. The same is when I run the executable created by the Setup Wizard on my desktop (Windows XP sp 3). But if I run the executable installed on a Windows 2003 Server, it takes 15 sec to complete! What could be the reason of degrading performance on the server vs. the desktop? The .Net framework 3.5 SP1 is installed both on the desktop and the server.
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Oct 19, 2009
Hope everyones doing well, not sure about the new decor around here though..Anyways, i have some labels on my form im trying to use as counters for records in a SQL db. One works just fine, and yet another using an almost identical query is returning very odd figures. If theres 5 records on the db its counting that as 1, and setting the label so. If theres 10 its counting that as 2, if theres 15 its showing 3, and so on.
[Code]...
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Mar 18, 2009
I'm looking to list all available performance counters (on a server) in my app and allow the user to select what he/she wishes to monitor. Then when they have been selected, hit a button, and the counters will start monitoring.
From using Google so far I can monitor one counter but I'm looking to monitor several user-selected counters. I guess in short I might be looking to re-hash perfmon. Would I need an array or a Microsoft.VisualBasic.Collection?
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Mar 25, 2009
Stupid question, but how do I get access to this Explorer? The says: To create a performance session for Windows client application:
(1) Open the solution in the Visual Studio IDE.
(2) On the <B>Analyze</B> menu, click <B>Launch Performance Wizard</B>.
(3) From the <B>Which of the following available targets would you like to profile?</B> drop-down list, select the name of the application that you want to profile, and then click <B>Next</B>. You can add more binaries later.
(4) Accept the default Sampling profiling method, and then click Next.
(5) Click <B>Finish</B>.
Only problem is that there is no <B>Analyze</B> menu in the IDE.
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Jun 10, 2011
This is my code that im working on
[Code]...
I want to add in textbox2.text and a button when i press button1 (it minus the number or whatever number i deside to put into textbox2.text) then the time (in textbox1.text ) goes back up to 100
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Jun 7, 2011
Possible Duplicate: Way to get unique filename if specified filename already exists (.NET)Have a look at the following code:
Dim counter As Integer = 0
While System.IO.File.Exists("C:DesktopSample.xls")
counter = counter + 1
[code].....
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Jul 18, 2010
I'm trying to increase the value of a registry entry by 1
HKLMSoftwareMyApp
Key = Test
Value +1
[Code]....
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Jan 27, 2011
i'm doing this for auto incrementing i called the last value in a row from a database for say, its p-0004 what i wanna do is take p-0004 and add 1 into it to make it p-0005 sorry for my stupidity, i tried using the trim method i used in vb 6 but there was an error like "read only property" something
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Aug 16, 2011
i'm doing this for auto incrementingi called the last value in a row from a databasefor say, its p-0004what i wanna do is take p-0004 and add 1 into it to make it p-0005sorry for my stupidity, i know this is a noobie question but hey, i'm a noob
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Aug 5, 2011
What is the += used in this code doing? Is that incrementing the loop?
Public Class Form1
02
Public Structure Family
[CODE]..........................
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Jul 11, 2011
I am trying to make a simple port scanner to scan a rang of IP's so like 192.168.4.245 to 192.168.5.100. I am using Visual Basic.Net 2010 and am having trouble converting the IP from a String to a Long so that I can increment it and convert it back to a String. For some reason VB.Net 2010 doesn't include the winsock controller and therefore I am having problems finding a method that works similar to inet_addr() which makes conversion much easier. I found an example on one of the forms here
Code:
Private Sub Command1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Command1.Click
[code]....
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