performancecounter

I have following class that returns number of current Request per Second of IIS. I call RefreshCounters every minute in order to keep Requests per Second value refreshed (because it is average and if I keep it too long old value will influence result too much)... and when I need to display current RequestsPerSecond I call that property. public class Counters { private static PerformanceCounter pcReqsPerSec; private const string counterKey = "Requests_Sec"; public static object RequestsPerSecond { get { lock (counterKey) { if (pcReqsPerSec != null) return pcReqsPerSec.NextValue().ToString("N2")

How can I get a list of all processes in C# and then for each process current memory and CPU consumption? Sample code is highly appreciated. The Process class has a GetProcesses method that will let you enumerate the running processes and list a bunch of stats like memory usage and CPU time. Look at the documentation under properties for the stats. Memory usage is a complex matter. There is really no single number, that describe the usage. Please see Russinovich's excellent series on the matter. The first installment is here: http://blogs.technet.com/markrussinovich/archive/2008/07/21/3092070

I have a program that works fine on VS2008 and Vista, but I'm trying it on Windows 7 and VS2010 / .NET Framework 4.0 and it's not working. Ultimately the problem is that System.Diagnostics.PerformanceCounterCategory.GetCategories() (and other PerformanceCounterCategory methods) is not working. I'm getting a System.InvalidOperationException with the message "Cannot load Counter Name data because an invalid index '' was read from the registry." I can reproduce this with the very simple program shown below: class Program { static void Main(string[] args) { foreach (var pc in System.Diagnostics

There are truckloads of counters available in perfmon for ASP.NET. What are the best (I am thinking of choosing 5-10) that will be the best to monitor in our test environment so that we can feed back to developers. I am thinking of things like request time, request queue length, active sessions etc. For a normal (not performance/stress testing) you would be OK with the following: Request Bytes Out Total (very important especially for web (not intranet) applications) Requests Failed Requests/Sec Errors During Execution Errors Unhandled During Execution Session SQL Server Connections Total State

I'm currently doing this: PerformanceCounter cpuUsage = new PerformanceCounter("Processor", "% Processor Time", "_Total"); cpuUsage.NextValue(); System.Threading.Thread.Sleep(1000); RV = cpuUsage.NextValue(); I call the function periodically to get CPU usage. When I monitor the system in TaskManager, the CPU usage reported by PerformanceCounter is consistently 15-20% higher than what TaskManager reports (30% in TaskManager = 50% from PerformanceCounter). Maybe there's documentation that I overlooked, but does anyone have an explanation? Maybe the CPU usage at the instant it checks is higher

When considering using performance counters as my companies' .NET based site, I was wondering how big the overhead is of using them. Do I want to have my site continuously update it's counters or am I better off to only do when I measure? The performance impact is negligible in updating. Microsoft's intent is that you always write to the performance counters. It's the monitoring of (or capturing of) those performance counters that will cause a degradation of performance. So, only when you use something like perfmon to capture the data. In effect, the performance counter objects will have the