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Old 06-08-2011, 04:30 PM   #1
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Registered: Jun 2011
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find out how much time an already running process is spending in user and kernel spac

Good evening,

I am currently struggling with one of my tasks.
I was asked to find a way how to determine how much time an _already running_ process is spending in user and kernel space.

E.G. <some tool> <pid>
[Control] + [c]

<pid> spent 12.1 seconds in user and 1.52 seconds in kernel space.

Does something like this exist? Basically I guess I am looking for something similar to time, except that the process is already running.

a) Is there a tool which fulfills this task?
b) Is there a way to write your own software which does the job? Is it even possible to code something I am looking for?

I recently found strace -c -p <pid>, but well, this is not exactly what I was looking for.

Any reply is highly appreciated.

Best regards,
Old 06-08-2011, 04:42 PM   #2
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Registered: May 2011
Distribution: Arch Linux
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I'm not sure exactly what you want, but check out the 'time' command which takes programs as argument and displays elapsed time.
Old 06-08-2011, 04:56 PM   #3
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I am looking for a possibility to use something like "time" for processes which are already running.

Like using "time" on a running slapd.

time only offers the possibility to track the stats for new processes, but not for running ones.
Old 07-05-2011, 02:58 PM   #4
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Any help would be highly appreciated. I need to find out how much time a process spends in user/kernel space, but the command was not startet with "time".


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