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Start a new process when memory/cpu utilisation falls

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Old 11-03-2008
Start a new process when memory/cpu utilisation falls
Hi all,
I am a newbie to whole shell scripting thing. I deal with computational studies and a lot of softwares which run on linux. At times, I have to schedule my jobs after some process has started. In these case, I have to use at command to schedule my job.
However, I would like to know if there is a command or script which monitors the %cpu/memeory usage of my computer and when it fall a certain value, another predefined process(job) starts running.
I have also used wait command, but that is only useful with fresh start and not when one process is already running and I want to queue another job after it.
Basicaly I want to schedule the jobs one after one.
Thanks in advance.
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LEARN ABOUT HPUX

wait

wait(1) 						      General Commands Manual							   wait(1)

NAME

       wait - await process completion

SYNOPSIS

       [pid]

DESCRIPTION

       If  no argument is specified, waits until all processes (started with of the current shell have completed, and reports on abnormal termina-
       tions.  If a numeric argument pid is given and is the process ID of a background process, waits until that process has  completed.   Other-
       wise, if pid is not a background process, exits without waiting for any processes to complete.

       Because the system call must be executed in the parent process, the shell itself executes without creating a new process (see wait(2)).

   Command-Line Arguments
       supports the following command line arguments:

	      The unsigned decimal integer process
			  ID of a command, whose termination is to wait for.

WARNINGS

       Some processes in a 2-or-more-stage pipeline may not be children of the shell, and thus cannot be waited for.

SEE ALSO

       csh(1), ksh(1), sh-posix(1), sh(1), wait(2).

STANDARDS CONFORMANCE

																	   wait(1)