performancecounter

问题 I'm trying to find the best method of incode performance monitoring on the iPhone. On a windows platform I would use the following functions : QueryPerformanceCounter((LARGE_INTEGER *)&ctr); QueryPerformanceFrequency((LARGE_INTEGER *)&freq); Does anything like this exist on the iPhone? Whats the highest resolution I can time something without using an external tool such as Instruments or Shark? 回答1: I think mach_absolute_time is what you are looking for. For more information: Technical Q&A

问题 When I execute the following program and look at the performance counter the results don't make sense to me. The average value is zero and the min/max values are ~0.4 when I would expect ~0.1 or ~100. What is my problem? Code class Program { const string CategoryName = "____Test Category"; const string CounterName = "Average Operation Time"; const string BaseCounterName = "Average Operation Time Base"; static void Main(string[] args) { if (PerformanceCounterCategory.Exists(CategoryName))

问题 Given a process ID, how can i get the cpu load from this process with C#? I have tried using PerformanceCounter as described in c# calculate CPU usage for a specific application I have also tried to manually take two values of the total cpu time for the process within a timeframe and divide the delta-cpu-time with the delta-total-time. Both these methods seems to work fine at first but if i put my application next to windows task manager my application always shows about twice as much as the

问题 I want to use the performance counter output in my program. How can I access the performance counter in code without using the perfmon.exe. I want to create my own performance counter app. 回答1: This is exposed via the PerformanceCounter Class. 回答2: You can fully interact with performancecounters throught the System.Diagnostics.PerformanceCounter classes (Documentation and examples here). 来源： https://stackoverflow.com/questions/2712649/how-can-i-access-the-c-sharp-performance-counter-in-the

问题 I found many sources to get the cpu usage of each process. in general there are many ways to get the cpu usage of process . percentprocessortime from win32_perfformatteddata_perfproc_process performancecounter class in system.diagnostics by manual calculation Process class (by process.getcurrentprocess().totalprocessortime;) as said in here. FirstWay: For the remote process monitoring(my scenario is remote monitoring), the percentprocessortime always shows value 0 to 100+. this 100+ happens

问题 I am trying to learn how to monitor the network bandwidth usage of a specific application. I am looking at IPv4InterfaceStatistics , but that seems to monitor an NIC card's performance. I'd like to monitor a specific application to see how much bandwidth is consumed every second. Does anyone know of an example of how this can be done? 回答1: using System; using System.Diagnostics; using System.Globalization; using System.IO; using System.Net; using System.Net.Sockets; using System.Reflection;

问题 I'm trying to move the verification & creation of my performance counter groups, and the counters themselves, out of my web service and into a powershell script that's run during deployment. Can this be done? Or am I stuck using a simple app to build the groups & counters? Thanks much :) 回答1: Figured this out a while ago, but never posted. Here's my solution: //save out the type name for sanity's sake $ccdTypeName = 'System.Diagnostics.CounterCreationData' $CounterCollection = New-Object

问题 I am getting repeated errors about the ReadOnly property on performance counters whenever I try to debug a .NET windows service app. This app works fine on x86 windows vista, or x86 windows 2003. It's just stopped working on my new 64bit dev machine. I've run the relevant InstallUtil invocations on 64bit and 32bit command line VCVARS.bat, in admin mode. I get no errors setting up the category and each perf counter . But, regardless of whether I set the perf ctrs as readonly or not, I get this

问题 I am new on Load Testing (and in general, testing) with visual studio 2010 and I am dealing with several problems. My question is, is there any way possible, to add a custom test variable on the Load Test Results? I have the following UnitTest: [TestMethod] public void Test() { Stopwatch testTimer = new Stopwatch(); testTimer.Start(); httpClient.SendRequest(); testTimer.Stop(); double requestDelay = testTimer.Elapsed.TotalSeconds; } This UnitTest is used by many LoadTests and I want to add

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . Windows has a Performance Counters infrastructure. The OS provides some common counters, and I can go add my own. What is the corresponding concept in Linux/Unix? 回答1: Take a look at: OProfile perfctr perfmon2 回答2: There is also PAPI and PerfSuite. 回答3: Several applications exist which periodically check system