What are the ps command line options to view information about threads?
Solution
For Windows, I think Process Explorer shows you all the threads under a process.
use the ps command.
From the man page, there are a few thread options:
THREAD DISPLAY
-H Show threads as if they were processes
-L Show threads, possibly with LWP and NLWP columns
-T Show threads, possibly with SPID column
-m Show threads after processes
The classical tool top shows processes by default but can be told to show threads with the H key press or -H command line option.
There is also htop, which is similar to top but has scrolling and colors;
it shows all threads by default (but this can be turned off).
ps also has a few options to show threads, especially H and -L.
There are also GUI tools that can show information about threads,
for example qps (a simple GUI wrapper around ps) or conky (a system monitor with lots of configuration options).
For each process, a lot of information is available in /proc/12345 where 12345 is the process ID.
Information on each thread is available in /proc/12345/task/67890 where 67890 is the kernel thread ID.
This is where ps, top and other tools get their information.
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What are the ps command line options to view information about threads.docx
1. What are the ps command line options to view information about threads?
Solution
For Windows, I think Process Explorer shows you all the threads under a process.
use the ps command.
From the man page, there are a few thread options:
THREAD DISPLAY
-H Show threads as if they were processes
-L Show threads, possibly with LWP and NLWP columns
-T Show threads, possibly with SPID column
-m Show threads after processes
The classical tool top shows processes by default but can be told to show threads with the H key
press or -H command line option.
There is also htop, which is similar to top but has scrolling and colors;
it shows all threads by default (but this can be turned off).
ps also has a few options to show threads, especially H and -L.
There are also GUI tools that can show information about threads,
for example qps (a simple GUI wrapper around ps) or conky (a system monitor with lots of
configuration options).
For each process, a lot of information is available in /proc/12345 where 12345 is the process ID.
Information on each thread is available in /proc/12345/task/67890 where 67890 is the kernel
thread ID.
This is where ps, top and other tools get their information.
