How to know number of user threads from /proc

Hi,

You will get Number of Threads info your process is created is in
/proc/pid/status

root at kernel:/proc# ls  /proc/1951/task/
1951  1957  2162
root at kernel:/proc#
root at kernel:/proc#  cat /proc/1951/status | grep -i Threads:
Threads:    3
root at kernel:/proc#
root at kernel:/proc# cat /proc/self/status | grep -i Threads:
Threads:    1
root at kernel:/proc#


Thanks & Regards,
    PraviN


On Sun, Feb 26, 2012 at 11:11 PM, Dave Hylands [off-list ref] wrote:

Hi Kris,

On Sun, Feb 26, 2012 at 3:15 AM, emani murali [off-list ref] wrote:

quoted

Hi,
 I'm running a multithreaded program in OpenMP on linux to study CPU
overloading. As the subject says, I need to know the number of threads

this

quoted

program creates (assuming in this case, number of threads in this

program is

quoted

same as the number of user threads) from the information kernel provides.

I'm looking something similar to run-queue length from "sar -q 0" that

gives

quoted

me exact picture of number of user threads. From the implementation of

sar,

quoted

I found that this information is fetched from /proc filesystem.

So is there anyway that /proc fs gives me the number of threads running

in

quoted

the system, apart from /proc/cpuinfo that gives me a static information

of

quoted

existing CPUs.

There is a directory in /proc/PID/task for each thread contained
within a process.

--
Dave Hylands
Shuswap, BC, Canada
http://www.davehylands.com

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Thanks & Regards,*
---------PraviN---------*
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