Interpreting the Meaning of Time Method in Proc::ProcessTable

I have a following snippet:

use Proc::ProcessTable;  
my $now = time;
print "NOW:", scalar(localtime $now),"\n";

$t      = new Proc::ProcessTable;
printf( $FORMAT,  "START", "HOWLONG", "CMD"  );
foreach $p ( @{ $t->table } ) {
 
    printf( $FORMAT,
        scalar( localtime( $p->start ) ), $p->time, 
        );

    }

}


[download]

And it prints:

NOW  :Fri Oct 26 17:37:58 2007

[download]

and in one of the entry it prints: prints:

START                    HOWLONG
Fri Oct 26 03:23:00 2007 120000

[download]

I was wondering what does the figure 12000 mean? The doc doesn't seem to describe it tangibly:

time        user + system time       
[download]

Does that figure describe howlong a particular program is running? Is that in seconds?

Regards,
Edward

Comment on Interpreting the Meaning of Time Method in Proc::ProcessTable Select or Download Code
Re: Interpreting the Meaning of Time Method in Proc::ProcessTable by kyle (Abbot) on Oct 26, 2007 at 12:13 UTC
It's how much CPU time the process has used (in seconds, I assume). 'User' time is how much time was spent in the program itself and 'system' time is how much time was spent in the operating system servicing the program's requests. Update: Upon further reflection, I don't think that time is in seconds. Proc::ProcessTable::Process says that `utime` is in 1/100s of seconds, so that's probably what `time` is in too. Your 120000 figure is 33 hours as seconds and 20 minutes as 1/100s of seconds. If you're still in doubt, you could see what it says about "`perl -e '$i++ while 1'`" after ten seconds. My guess is it will be about 1000.	[reply] [d/l] [select]
Re^2: Interpreting the Meaning of Time Method in Proc::ProcessTable by jimsearle (Initiate) on Dec 07, 2007 at 21:49 UTC
Sorry, but I still don't get it... ProcessTable says this: PID PPID SIZE RSS TIME COMMAND 19524 14920 936000 762796 55550000 /tools/atoptech/AP_07.06-06.27/Linux/bin/rhel3-64/AP and ps says this about the same process: % ps -o 'ppid pid vsz rss time command' PPID PID VSZ RSS TIME COMMAND 14920 19524 936000 762796 00:00:55 /tools/atoptech/AP_07.06-06.27/Linux/bin/rhel3-64/AP Thanks, Jim	[reply]
Re^3: Interpreting the Meaning of Time Method in Proc::ProcessTable by kyle (Abbot) on Dec 08, 2007 at 13:29 UTC
It looks as if `ps` is reporting time in seconds (hours, minutes, seconds, separated by colons) and Proc::ProcessTable is reporting it in microseconds. If what you have is microseconds, you can convert that to seconds by dividing by one million. `my $microseconds = 55550000; my $seconds = $microseconds / 1_000_000;` [download]	[reply] [d/l] [select]


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Interpreting the Meaning of Time Method in Proc::ProcessTable

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