10-01-2013
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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UPTIME(1) User Commands UPTIME(1)
NAME
uptime - Tell how long the system has been running.
SYNOPSIS
uptime [options]
DESCRIPTION
uptime gives a one line display of the following information. The current time, how long the system has been running, how many users are
currently logged on, and the system load averages for the past 1, 5, and 15 minutes.
This is the same information contained in the header line displayed by w(1).
System load averages is the average number of processes that are either in a runnable or uninterruptable state. A process in a runnable
state is either using the CPU or waiting to use the CPU. A process in uninterruptable state is waiting for some I/O access, eg waiting for
disk. The averages are taken over the three time intervals. Load averages are not normalized for the number of CPUs in a system, so a
load average of 1 means a single CPU system is loaded all the time while on a 4 CPU system it means it was idle 75% of the time.
OPTIONS
-p, --pretty
show uptime in pretty format
-h, --help
display this help text
-s, --since
system up since, in yyyy-mm-dd HH:MM:SS format
-V, --version
display version information and exit
FILES
/var/run/utmp
information about who is currently logged on
/proc process information
AUTHORS
uptime was written by Larry Greenfield <greenfie@gauss.rutgers.edu> and Michael K. Johnson <johnsonm@sunsite.unc.edu>
SEE ALSO
ps(1), top(1), utmp(5), w(1)
REPORTING BUGS
Please send bug reports to <procps@freelists.org>
procps-ng December 2012 UPTIME(1)