performancecounter

问题 I am trying to get the "% Time in GC" performance counter in ".NET CLR Memory" category programmatically. According to the description in PerfMon, % Time in GC is the percentage of elapsed time that was spent in performing a garbage collection (GC) since the last GC cycle. This counter is usually an indicator of the work done by the Garbage Collector on behalf of the application to collect and compact memory. This counter is updated only at the end of every GC and the counter value reflects

问题 I installed perf on Haswell CPU( Intel Core i7-4790 ). But the "perf list" does not include "stalled-cycles-frontend" nor "stalled-cycles-backend". I checked the http://www.intel.com/content/www/us/en/processors/architectures-software-developer-manuals.html and not found the performance events relevant to stalled-cycles-backend from the Table 19-7( Non-Architectural Performance Events In the Processor Core of 4th Generation Intel Core Processors). So my question is: how can I measure stalled

问题 Im trying to implement a performance monitoring tool, I want to monitor basic things such as Memory and CPU. I am attempting to do so by using Performance Counters as I believe this is what Task Manager is using behind the scenes too. I have no idea how Task Manager is able to do this however as to me it seems to take a VERY long time to retrieve process data using this method: class Program { static void Main(string[] args) { while (true) { var pcs = Process.GetProcesses() .Select(p => new

问题 I use Intel PCM for fine-grained CPU measurements. In my code, I am trying to measure the cache efficiency. Basically, I first put a small array into the L1 cache (by traversing it many times), then I fire up the timer, go over the array one more time (which hopefully uses the cache), and then turning off the timer. PCM shows me that I have a rather high L2 and L3 miss ratio. I also checked with rdtscp and the cycles per array operation is 15 (which is much higher than 4-5 cycles for

问题 I'm trying to create a performance counter that can monitor the performance time of applications, one of which is Google Chrome. However, I notice that the performance time I get for chrome is unnaturally low - I look under the task-manager to realize my problem that chrome has more than one process running under the exact same name, but each process has a different working set size and thus(what I would believe) different processor times. I tried doing this: // get all processes running

问题 I am trying to c# PerformanceCounter Library part of System.Diagnostic. While setting the raw value of the counter using public long RawValue { set; get; } I was passing the Rawalue to 0. However I noticed that Maximum value of the counter was reset to a very large number. Previous value of the counter was 2 Can someone help me out and point out any mistake I might be making, here is my code using (PerformanceCounter ctr = new PerformanceCounter(Settings.Instance.SetSourceAppliacationName,

问题 how to get the cpu usage of a thread in .net in c# 回答1: Check How to get the cpu usage per thread on windows (win32) and GetThreadTimes you can use PInvoke for that. Another similar post on SO: How can I get CPU usage and/or RAM usage of a THREAD in C# (managed code)? So this is duplicate. 来源： https://stackoverflow.com/questions/3958571/cpu-usage-of-a-thread

问题 I'm trying to create a data collector set using Perfmon. When I right click 'New -> Data Collector Set' in the User Defined folder, I see the wizard dialog appear. However, the 'Next' and 'Finish' buttons are disabled. All I can do is click on Cancel. Any ideas? 回答1: Found the answer to this while googling a problem with the disk defragger. The recommendation I found was to (backup first!) remove the registry key: HKLM\Software\Microsoft\RPC\Internet I exported the key for a backup; deleted

问题 I intend to collect the statistics of a linux application for a small subset of its program execution. This subset can be defined as first n instructions, or first n cycles. For the defined subset, we are interested in statistics like branch prediction accuracy, cache hit-rates, and the IPC of the core. perf tool looks like the best bet for such monitoring. However, the way to specify a subset in perf is by running a command which gives the subset information. Example : If I want to collect

问题 ProcessExplorer somehow obtain this value and show it on Performance tab for each process... How to get it using Win32 API? Solution: In `Peak Private Bytes' field, Process Explorer actually shows "Process\...\Page File Bytes Peak" performance counter. This value could be easily retrieved with PSAPI function GetProcessMemoryInfo. 回答1: GetProcessMemoryInfo gets you this: PrivateUsage The current amount of memory that cannot be shared with other processes, in bytes. Private bytes include memory