task switching in linux

rainmann · 01-20-2004, 01:47 PM

Hello,

How do you determine the task switching time on linux?

Is there a utility that I can used that will show time?

Thanks

Tinkster · 01-20-2004, 01:58 PM

Quote:

How do you determine the task switching time on linux?

Is there a utility that I can used that will show time?

I'm not quite sure I understand what you're asking?

If you do top, or ps -A you will see how much
time (CPU slices) each process used since it was
started ... not sure what you mean when you talk
about "switching time" ....

Cheers,
Tink

rainmann · 01-20-2004, 02:55 PM

I guess I am asking How much time does it take for a task
to shutdown and how much time does it take for a task to start.

Thanks

stickman · 01-20-2004, 03:32 PM

You can use the time command to measure that amount of time that a process takes from start to finish.

h/w · 01-20-2004, 06:15 PM

that will give you the time taken for execution, unless there is some argument to pass to 'time' which gives what he wants.

i believe he is looking for the switching time between processes (which would mean the time slice allotted to a process?), which is set by the scheduler. 2.4, i believe had sched.c

h/w · 01-20-2004, 06:17 PM

and by 'shutdown" and "start" , do you mean for one particular process? or do you mean "shutdown" for one and "start" for another.

Tinkster · 01-20-2004, 08:29 PM

Quote:

Originally posted by rainmann
I guess I am asking How much time does it take for a task
to shutdown and how much time does it take for a task to start.

I still don't understand ... can you give a
verbose example?
Like, How long does it take to start Mozilla from the click
on the mozilla icon on my taskbar, until it's actually
usable?

Cheers,
Tink