C# - Counter of type RateOfCountsPerSecond32 always shows 0. C# - How to use AverageTimer32 and AverageBase performance counters with System.Diagnostics.Stopwatch. PerformanceCounter Class (System.Diagnostics) The PerformanceCounter component can be used for both reading existing predefined or custom counters and publishing (writing) performance data to custom counters. The counter is the mechanism by which performance data is collected. The registry stores the names of all the counters, each of which is related to a specific area of system functionality.
Examples include a processor's busy time, memory usage, or the number of bytes received over a network connection. Each counter is uniquely identified through its name and its location. In the same way that a file path includes a drive, a directory, one or more subdirectories, and a file name, counter information consists of four elements: the computer, the category, the category instance, and the counter name.
The counter information must include the category, or performance object, that the counter measures data for. A computer's categories include physical components, such as processors, disks, and memory. PerformanceCounters: single instance, multi-instance and WMI [David Gutierrez] - BCL Team Blog. Performance counter categories come in one of two modes: single instance and multi-instance. If you want your category to be visible through WMI, it's important to know the difference. A single instance category has only one machine wide value for each counter.
A good example of a category supplied by Windows is the "System" category. It has counters like "Threads" and "System up time", and clearly there's only one value for each of those counters. Writing to a single instance category using System.Diagnostics.PerformanceCounter looks something like this: PerformanceCounter pc = new PerformanceCounter(myCategory, myCounter, false); pc.RawValue = 10; Other categories are multi-instance, meaning they can have unlimited number of different values for each counter.
PerformanceCounter pc = new PerformanceCounter(myCategory, myCounter, myInstance, false); pc.RawValue = 10; Why is it important to know the difference here? PerformanceCounterInstaller pcInstaller = new PerformanceCounterInstaller(); PerformanceCounterType Enumeration (System.Diagnostics)