How to fix the CPU bound issues on AIX?

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10-23-2013

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SystemAdmin77,

IBM WAS (Websphere) on AIX---> it always and all the time cause MEMORY leaks. I devoted hours doing perf mon and analysis and all we need is to bounce the WAS and all are gone.

Advise to you mate. talk to the Apps admin who is managing the WAS to make sure apply the latest WAS FP. and do some bounce.

It is not the problem of AIX but a problem of the Websphere. =)

csorhand

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sys::statistics::linux::cpustats

Sys::Statistics::Linux::CpuStats(3pm)			User Contributed Perl Documentation		     Sys::Statistics::Linux::CpuStats(3pm)

NAME

       Sys::Statistics::Linux::CpuStats - Collect linux cpu statistics.

SYNOPSIS

	   use Sys::Statistics::Linux::CpuStats;

	   my $lxs = Sys::Statistics::Linux::CpuStats->new;
	   $lxs->init;
	   sleep 1;
	   my $stats = $lxs->get;

       Or

	   my $lxs = Sys::Statistics::Linux::CpuStats->new(initfile => $file);
	   $lxs->init;
	   my $stats = $lxs->get;

DESCRIPTION

       Sys::Statistics::Linux::CpuStats gathers cpu statistics from the virtual /proc filesystem (procfs).

       For more information read the documentation of the front-end module Sys::Statistics::Linux.

CPU STATISTICS

       Generated by /proc/stat for each cpu (cpu0, cpu1 ...). cpu without a number is the summary.

	   user    -  Percentage of CPU utilization at the user level.
	   nice    -  Percentage of CPU utilization at the user level with nice priority.
	   system  -  Percentage of CPU utilization at the system level.
	   idle    -  Percentage of time the CPU is in idle state.
	   total   -  Total percentage of CPU utilization.

       Statistics with kernels >= 2.6.

	   iowait  -  Percentage of time the CPU is in idle state because an I/O operation
		      is waiting to complete.
	   irq	   -  Percentage of time the CPU is servicing interrupts.
	   softirq -  Percentage of time the CPU is servicing softirqs.
	   steal   -  Percentage of stolen CPU time, which is the time spent in other
		      operating systems when running in a virtualized environment (>=2.6.11).

METHODS

   new()
       Call "new()" to create a new object.

	   my $lxs = Sys::Statistics::Linux::CpuStats->new;

       Maybe you want to store/load the initial statistics to/from a file:

	   my $lxs = Sys::Statistics::Linux::CpuStats->new(initfile => '/tmp/cpustats.yml');

       If you set "initfile" it's not necessary to call sleep before "get()".

       It's also possible to set the path to the proc filesystem.

	    Sys::Statistics::Linux::CpuStats->new(
	       files => {
		   # This is the default
		   path => '/proc'
		   stat => 'stat',
	       }
	   );

   init()
       Call "init()" to initialize the statistics.

	   $lxs->init;

   get()
       Call "get()" to get the statistics. "get()" returns the statistics as a hash reference.

	   my $stats = $lxs->get;

   raw()
       Get raw values.

EXPORTS

       No exports.

SEE ALSO

       proc(5)

REPORTING BUGS

       Please report all bugs to <jschulz.cpan(at)bloonix.de>.

AUTHOR

       Jonny Schulz <jschulz.cpan(at)bloonix.de>.

COPYRIGHT

       Copyright (c) 2006, 2007 by Jonny Schulz. All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2012-03-09				     Sys::Statistics::Linux::CpuStats(3pm)

Emergency UNIX and Linux Support