Waiting for a background process to finish Post: 302223672

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LEARN ABOUT OSX

priclass.d

priclass.d(1m)							   USER COMMANDS						    priclass.d(1m)

NAME

       priclass.d - priority distribution by scheduling class. Uses DTrace.

SYNOPSIS

       priclass.d

DESCRIPTION

       This is a simple DTrace script that samples at 1000 Hz the current thread's scheduling class and priority. A distribution plot is printed.

       With priorities, the higher the priority the better chance the thread has of being scheduled.

       This idea came from the script /usr/demo/dtrace/pri.d, which produces similar output for priority changes, not samples.

       Since this uses DTrace, only users with root privileges can run this command.

EXAMPLES

       This samples until Ctrl-C is hit.
	      # priclass.d

FIELDS

       value  process priority

       count  number of samples of at least this priority

SCHEDULING CLASSES

       TS     time sharing

       IA     interactive

       RT     real time

       SYS    system

       FSS    fair share scheduler

BASED ON

       /usr/demo/dtrace/pri.d

DOCUMENTATION

       DTrace Guide "profile Provider" chapter (docs.sun.com)

       See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.

EXIT

       priclass.d will sample until Ctrl-C is hit.

SEE ALSO

       pridist.d(1M), dispadmin(1M), dtrace(1M)

version 1.00							   Apr 22, 2006 						    priclass.d(1m)

10 More Discussions You Might Find Interesting

1. Linux

waiting process

Discussion started by: shukla_chanchal

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Process(s) ID waiting on IO?

Discussion started by: Citrus143

3. AIX

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Discussion started by: chandrakala.sg

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Waiting for an arbitrary background process (limiting number of jobs running)

Discussion started by: p.f.moore