What's the lighest way to get a running processes list sorted by processor load? (kind of same as task manager but only sorted by processor usage load)
Lighest is the key word, because i want to make an updated and refreshed list every 2 seconds or something like that.
EDIT : using windows 7
I would recommend reading into the Process class
- System.Diagnostics.Process
Documentation
I would recommend looking at the GetProcesses() method within here.
When I pass this below link query I find that the CPU usage goes till 100%
Query for searching the files
How Could I minimize this usage ,because if other application simultaneously runs it may cause harm to those application .I saw WMIPrvSE.exe is consuming CPU's 100 % memory.I can neither exit this application because it is fetching the data through WMI.
I do search other system queries from the WMI having different object for management object searcher as given in this link
Query for finding users.
When I completely execute the whole program ,I find it that CPU usage goes entirely up to 100% and doesn't come down till the application fetches all the data.
While debugging the code the usage goes down but trying to put Thread.Sleep doesn't do anything.
I need to get some of the values that are in the windows 7 resource monitor. In particular,I have found the memory usage and cpu but i am not able to get the bandwidth per process. I've looked into the PerformanceCounter class and I don't see a way to drill down to the process network level. The resource monitor has exactly what I am looking for. I looked into WMI as well and it seems most people recommend not using it but if anyone has WMI query as well then please let me know.
One most important thing that i want to tell you is that i don't want to get the calculated bandwidth of Network Interface , I want per process as shown in the resource monitor of the task manager.
So does anyone know how I can get this statistics at the process level using .net classes?
I want to be able to detect a change in the list of installed programs on a pc using wmi.
I have 2 options 1- run a wmi query every X seconds and compare to a saved file containing the list. 2 - start a Wmi event that polls every X seconds.
Which uses less processing power give that I would like X to be 60 seconds?
As it's a 'versus' :
create a 'Task Schedule' triggering on "event:NewApp"
WMI for peek any changes is so heavy processing.
"EventLogs + Scheduling a Task "are really relevant. ( if enabled )
The performance difference between the two will be fairly negligible.
I am working on a background program that will be running for a long time, and I have a external logging program (SmartInspect) that I want to feed with some values periodically, to monitor it in realtime when debugging.
I know I can simply fire up multiple programs, like the Task Manager, or IARSN TaskInfo, but I'd like to keep everything in my own program for this, as I also wants to add some simple rules like if the program uses more than X% CPU, flag this in the log.
I have a background thread that periodically feeds some statistics to SmartInspect, like memory consumption, working set, etc.
Is it possible for this thread to get a reasonably accurate measure of how much of the computer's CPU resources it consumes? The main program is a single-threaded application (apart from the watchdog thread that logs statistics) so if a technique is limited to how much does a single thread use then that would be good too.
I found some entries related to something called rusage for Linux and C. Is there something similar I can use for this?
Edit: Ok, I tried the performance counter way, but it added quite a lot of GC-data each time called, so the graph for memory usage and garbage collection skyrocketed. I guess I'll just leave this part out for now.
You can also use System.Diagnostics.Process.TotalProcessorTime and System.Diagnostics.ProcessThread.TotalProcessorTime properties to calculate your processor usage as this article describes.
Have a look at System.Diagnostics.PerformanceCounter. If you run up perfmon.exe, you'll see the range of performance counters available to you (set the 'performance object' to 'Process'), one of which is '% Processor Time'.
You can through the System.Diagnostic.PerformanceCounter class. Here's an example of somebody monitoring CPU usage:
http://blogs.msdn.com/dotnetinterop/archive/2007/02/02/system-diagnostics-performancecounter-and-processor-time-on-multi-core-or-multi-cpu.aspx
Note that this does require elevated privileges. And there may be a performance hit using it.
It is good that you are logging to monitors like smartinspect. But windows itself gathers the data for each resource in this case your program (or process). WMI is the standard for Application monitoring. We can view the data captured by WMI. Many application management, health monitoring or applicaiton monitoring tools support WMI out of the box.
So I would not recommend you to log your CPU usage within the application to a log file.
If you think availablity and performance is critical then go for solutions like Microsoft Operations manager solution.
To get an idea about WMI and to get the list of process see below:
- Win32_PerfFormattedData_PerfProc_Process to get Cpu time, filter is processID
See this article
- You can get the processID from Win32_process class.
WMI Made Easy For C# by Kevin Matthew Goss
oConn.Username = "JohnDoe";
oConn.Password = "JohnsPass";
System.Management.ManagementScope oMs = new System.Management.ManagementScope("\\MachineX", oConn);
//get Fixed disk stats
System.Management.ObjectQuery oQuery = new System.Management.ObjectQuery("select FreeSpace,Size,Name from Win32_LogicalDisk where DriveType=3");
//Execute the query
ManagementObjectSearcher oSearcher = new ManagementObjectSearcher(oMs,oQuery);
//Get the results
ManagementObjectCollection oReturnCollection = oSearcher.Get();
//loop through found drives and write out info
foreach( ManagementObject oReturn in oReturnCollection )
{
// Disk name
Console.WriteLine("Name : " + oReturn["Name"].ToString());
// Free Space in bytes
Console.WriteLine("FreeSpace: " + oReturn["FreeSpace"].ToString());
// Size in bytes
Console.WriteLine("Size: " + oReturn["Size"].ToString());
}
You can monitor the process from Remote system as well.
This code project article describes how to use the high performance timer:
http://www.codeproject.com/KB/cs/highperformancetimercshar.aspx
You can use it to time the execution of your code.
Here you can find a number of open source C# profilers:
http://csharp-source.net/open-source/profile