performancecounter

问题 I'm trying to access the performance counters located in ".NET CLR Memory category" through C# using the PerformanceCounter class. However a cannot instantiate the categories with what I would expect was the correct category/counter name new PerformanceCounter(".NET CLR Memory", "# bytes in all heaps", Process.GetCurrentProcess().ProcessName); I tried looping through categories and counters using the following code string[] categories = PerformanceCounterCategory.GetCategories().Select(c => c

问题 I have created a custom performance counter using the following code: public class PerfCounter { private PerformanceCounter perfCounter; PerfCounter(string CategoryName, string CounterName) { perfCounter = new PerformanceCounter(CategoryName, CounterName, false); perfCounter.BeginInit(); } public void IncrementBy(long value) { perfCounter.IncrementBy(value); } public void Reset() { //what should I add here? } } Everything works fine but I don't know how to Reset the counter. Can anyone help

问题 I am trying to connect directly to the performance counters emitted by ServiceModel (for services, endpoints and operations). The problem is that when I try to correlate with a certain service (or endpoint/operation) I need to specified instance name of the counter. According to MSDN the pattern by which instance name is simple, however in certain cases when one of the components of the instance name (uri, contract name, etc.) is too long it’s shortened and hash code is added at either the

问题 I want to use Precise Event-Based Sampling (PEBS) to record all the addresses of specific events (say cache misses for example), on a XeonE5 Sandy Bridge. However, the Performance Analysis Guide for Core TM i7 Processor and Intel® XeonTM 5500 processors , p.24, contains the following warning: As the PEBS mechanism captures the values of the register at completion of the instruction, the dereferenced address for the following type of load instruction (Intel asm convention) cannot be

问题 Inside the static Stopwatch constructor we can see the following code, that basicly checks whether a high-resolution performance counter exists. static Stopwatch() { if (!SafeNativeMethods.QueryPerformanceFrequency(out Frequency)) { IsHighResolution = false; Frequency = 0x989680L; tickFrequency = 1.0; } else { IsHighResolution = true; tickFrequency = 10000000.0; tickFrequency /= (double) Frequency; } } On MSDN it says about QueryPerformanceFrequency : Retrieves the frequency of the high

问题 I want to access performance counters inside the kernel. I found many ways to use performance counters in user space, but can you tell me some way to use those in kernel space. Please don't specify tool name , I want to write my own code, preferably a kernel module. I am using Ubuntu with kernel 3.18.1. 回答1: http://www.cise.ufl.edu/~sb3/files/pmc.pdf http://www.cs.inf.ethz.ch/stricker/lab/doc/intel-part4.pdf The first pdf contains description on how to use pmc. The second contains the address

问题 I have been trying to get the total CPU usage of windows PC (Windows 7 running .Net 4.5) in C#. It looks like using PerformanceCounter should be able to meet my needs. I wrote some trial code based off the three links below (and checking the msdn pages), this was the most basic version: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Diagnostics; namespace EntropyProject { class Program { static void Main(string[

问题 I am using a Zynq chip on a development board ( ZC702 ) , which has a dual cortex-A9 MPCore at 667MHz and comes with a Linux kernel 3.3 I wanted to compare the execution time of a program so first a used clock_gettime and then used the counters provided by the co-processor of ARM. The counter increment every one processor cycle. ( based on this question of stackoverflow and this) I compile the program with -O0 flag ( since I don't want any reordering or optimization done) The time I measure

问题 In our application, we are using the Windows Performance Counters to store some of our application metrics, which are later retrieved in some web services. I'm having an issue with the amount of time it takes to read the value from the counters. I've looked through the rest of my app and everything is fine, performance wise, but reading from the counters within a loop (from List or array) takes a painful amount of time. Example code: // This triggers a read of the counter's initial value

问题 I'm trying to program in a performance counter into my C# application that launches another process and checks the processor usage of that launched process. As I understand it, the performance counter class requires me to assign a category name , a counter name, and a process name. I can get the process name easily enough, but is there a list of some sort on the internet that has all possible category and counter names I can assign? I tried scouring MSDN for something like this, but I didn't