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Top Forums UNIX for Advanced & Expert Users Conflicts in the output of TOP command Post 302751679 by rbatte1 on Friday 4th of January 2013 09:52:35 AM
Old 01-04-2013
This would suggest that you are on a multi-processor system and the process running is multi-threaded to take advantage of the hardware. You will only get up to 100% per processor, but they will be totted up for a multi-thread process.

Do you have 40 processors or more?

The other potential is for a process that is started during the time that top is taking it's sample. If it takes 0.1 seconds for top to collect everything and a process starts after 0.09 seconds but still gets collected, I have seen that skew the figures momentarily.

Perhaps from the command line, you could use vmstat 2 2 at the time and find the CPU counts there for the whole machine. You can also:-
Code:
ps -ef | sort -n +3

... on older unix servers to get the busiest process at the bottom of the list and you can check if it is newly started. The sort would change to:-
Code:
ps -ef | sort -k4


I hope that this helps.

Robin
Liverpool/Blackburn
UK
This User Gave Thanks to rbatte1 For This Post:
 

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IO::Async::PID(3pm)					User Contributed Perl Documentation				       IO::Async::PID(3pm)

NAME
"IO::Async::PID" - event callback on exit of a child process SYNOPSIS
use IO::Async::PID; use POSIX qw( WEXITSTATUS ); use IO::Async::Loop; my $loop = IO::Async::Loop->new; my $kid = $loop->fork( code => sub { print "Child sleeping.. "; sleep 10; print "Child exiting "; return 20; }, ); print "Child process $kid started "; my $pid = IO::Async::PID->new( pid => $kid, on_exit => sub { my ( $self, $exitcode ) = @_; printf "Child process %d exited with status %d ", $self->pid, WEXITSTATUS($exitcode); }, ); $loop->add( $pid ); $loop->run; DESCRIPTION
This subclass of IO::Async::Notifier invokes its callback when a process exits. For most use cases, a IO::Async::Process object provides more control of setting up the process, connecting filehandles to it, sending data to and receiving data from it. EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters: on_exit $exitcode Invoked when the watched process exits. PARAMETERS
The following named parameters may be passed to "new" or "configure": pid => INT The process ID to watch. Must be given before the object has been added to the containing "IO::Async::Loop" object. on_exit => CODE CODE reference for the "on_exit" event. Once the "on_exit" continuation has been invoked, the "IO::Async::PID" object is removed from the containing "IO::Async::Loop" object. METHODS
$process_id = $pid->pid Returns the underlying process ID $pid->kill( $signal ) Sends a signal to the process AUTHOR
Paul Evans <leonerd@leonerd.org.uk> perl v5.14.2 2012-10-24 IO::Async::PID(3pm)
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