Count of system-wide threads?

[Gunga Din]

I must be missing it somehow...

I need to count the number of threads running, not just those started by my
application. Rather like the Task Manager, I would like to get the total
number of threads that are active.

What would be the most reliable way to obtain this number?

Thanks!

 

[Guest]

Hi Gunga,
To do this, you need to first import System.Diagnostic namespace, get the
current processes running on your machine and retrieve the total threadcounts
of each process.
See me code below,

using System.Diagnostics;


Process[] processList = Process.GetProcesses();
int threadCount = 0;
foreach (Process proc in processList)
{
threadCount = threadCount + proc.Threads.Count;
}

The threadCount gives you the final count of total number of active threads
on your machine...
Hope this helps!!

 

[Marc Gravell]

Note also that in 2.0 onwards managed threads don't always have a 1:1
mapping to system (process) threads. I only mention this in case you
need to account for some unexpected results.

Marc

 

[Willy Denoyette [MVP]]

I must be missing it somehow...

I need to count the number of threads running, not just those started by my application.
Rather like the Task Manager, I would like to get the total number of threads that are
active.

What would be the most reliable way to obtain this number?

Thanks!

Read the performance counters using System.Diagnostics the counter to read is
System/Threads.

Willy.

 

[Willy Denoyette [MVP]]

Hi Gunga,
To do this, you need to first import System.Diagnostic namespace, get the
current processes running on your machine and retrieve the total threadcounts
of each process.
See me code below,

using System.Diagnostics;


Process[] processList = Process.GetProcesses();
int threadCount = 0;
foreach (Process proc in processList)
{
threadCount = threadCount + proc.Threads.Count;
}

The threadCount gives you the final count of total number of active threads
on your machine...
Hope this helps!!

No need to enumerate the running processes, just need to read the System/Threads performnace
counter.

Willy.
..

 

[Willy Denoyette [MVP]]

Note also that in 2.0 onwards managed threads don't always have a 1:1 mapping to system
(process) threads. I only mention this in case you need to account for some unexpected
results.

Marc

Actually this is only true when managed code hosted in SQL2005, an environment which doesn't
allow (by default) to call System.Diagnostics methods anyway. The option to map fibers to
managed threads has not been implemented in V2 of the CLR, and AFAIK there are no direct
plans to implement this in version next either.

Willy.

 

[Gunga Din]

Hi Gunga,
To do this, you need to first import System.Diagnostic namespace, get the
current processes running on your machine and retrieve the total
threadcounts
of each process.
See me code below,

using System.Diagnostics;


Process[] processList = Process.GetProcesses();
int threadCount = 0;
foreach (Process proc in processList)
{
threadCount = threadCount + proc.Threads.Count;
}

The threadCount gives you the final count of total number of active
threads
on your machine...
Hope this helps!!



--

Thank you very much!

Exactly what I needed...