Average CPU and RAM usage for a process Post: 302858627

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Top Forums UNIX for Dummies Questions & Answers Average CPU and RAM usage for a process Post 302858627 by bakunin on Tuesday 1st of October 2013 03:07:37 AM

10-01-2013

Registered User

Quote:

Originally Posted by koustubh

I was wondering if it possible to do it in a single command while creation.

No, this isn't possible, save for some very limited (and probably pointless) exceptions: how much RAM and how many processor cycles your process consumes depends on things only known during runtime: user actions, size and content of input files, signals issued to the process, etc.. All these things will influence the actions of and hence the resources consumed by a process.

It is possible to determines such resources consumed afore in some very specialised areas: real-time signal processors for instance. But it is possible only because the input is of a known size (like: "20-bit sampling at 96kHz", as in AC'97, which yields a constant data rate of about 512 kB/s) and content and there are no other outside factors (signals, user interaction, ...) to influence the operation of such a program.

I hope this helps.

bakunin

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LEARN ABOUT OSX

kill.d

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

NAME

       kill.d - snoop process signals as they occur. Uses DTrace.

SYNOPSIS

       kill.d

DESCRIPTION

       kill.d is a simple DTrace program to print details of process signals as they are sent, such as the PID source and destination, signal num-
       ber and result.

       This program can be used to determine which process is sending signals to which other process.

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

EXAMPLES

       Default output, print process signals as they are sent.
	      # kill.d

FIELDS

       FROM   source PID

       COMMAND
	      source command name

       TO     destination PID

       SIG    destination signal ("9" for a kill -9)

       RESULT result of signal (-1 is for failure)

DOCUMENTATION

       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

       kill.d will run forever until Ctrl-C is hit.

AUTHOR

       Brendan Gregg [Sydney, Australia]

SEE ALSO

       dtrace(1M), truss(1)

version 0.90							   May 14, 2005 							kill.d(1m)

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