Application Performance on AIX Box Post: 302298591

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Operating Systems AIX Application Performance on AIX Box Post 302298591 by shockneck on Wednesday 18th of March 2009 03:59:47 AM

03-18-2009

Registered User

Quote:

Originally Posted by Neo

You can install Zabbix, which is free and open source to monitor AIX performance.

There are many other ways, of course, We use Zabbix to monitor the performance of this site.

I believe there are some thousend freeware tools that monitor some sort of performance. Unfortunately most of those monitors are not aware of AIX and not aware of pSeries hardware. Hence they will fail to monitor more than the basics. Especially when it comes to RSCT and Kernel those tools often are not up to the job. Things might get worse when you have to compile the monitor yourself. That all is unfortunate but at the same time unneccessary. As an AIX admin you'd probably use one of the monitors from the IBM wiki: IBM developerWorks: Wikis - AIX - Performance Other Tools

A very fast and easy montoring can be set up with nmon. It can collect perf data into a file that can be analysed with the nmon analyser. So to set up monitoring on a standalone server in two steps you'd
1. Install nmon on target.
2. Call nmon from crontab :

Code:

1 0 * * * nmon -F $(date +\%d\%m\%Y).nmon -I 0.001 -s 300 -c 288 -m /<datatarget_directory>

You are done. This will collect a 24 hour period of performance data with a five minute intervall into a file every day.
Two more hints for using nmon
- Nmon uses public API hence no need to run it as root.
- If nmon stops writing into the file there might be an error with the device that is being queried. In that case either remove the error or prevent nmon from querying that device (by commandline option).

@OP: You are right: to find out if/how the new app affects performance of your system you need to know what the load was before the new app was installed. So for comparison you need to uninstall the app, monitor, then install the app and monitor again. However if monitoring with the app reveals that performance is still ok you might simply leave it.

Last edited by shockneck; 03-19-2009 at 09:47 AM.. Reason: pimped crontab entry

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LEARN ABOUT CENTOS

dbus-monitor

dbus-monitor(1) 					      General Commands Manual						   dbus-monitor(1)

NAME

       dbus-monitor - debug probe to print message bus messages

SYNOPSIS

       dbus-monitor [--system | --session | --address ADDRESS] [--profile | --monitor] [watch expressions]

DESCRIPTION

       The  dbus-monitor command is used to monitor messages going through a D-Bus message bus.  See http://www.freedesktop.org/software/dbus/ for
       more information about the big picture.

       There are two well-known message buses: the systemwide message bus (installed  on  many	systems  as  the  "messagebus"	service)  and  the
       per-user-login-session  message	bus (started each time a user logs in).  The --system and --session options direct dbus-monitor to monitor
       the system or session buses respectively.  If neither is specified, dbus-monitor monitors the session bus.

       dbus-monitor has two different output modes, the 'classic'-style monitoring mode and profiling mode. The profiling format is a compact for-
       mat  with a single line per message and microsecond-resolution timing information. The --profile and --monitor options select the profiling
       and monitoring output format respectively. If neither is specified, dbus-monitor uses the monitoring output format.

       In order to get dbus-monitor to see the messages you are interested in, you should specify a set of watch expressions as you  would  expect
       to be passed to the dbus_bus_add_match function.

       The message bus configuration may keep dbus-monitor from seeing all messages, especially if you run the monitor as a non-root user.

OPTIONS

       --system
	      Monitor the system message bus.

       --session
	      Monitor the session message bus.	(This is the default.)

       --address ADDRESS
	      Monitor an arbitrary message bus given at ADDRESS.

       --profile
	      Use the profiling output format.

       --monitor
	      Use the monitoring output format.  (This is the default.)

EXAMPLE

       Here is an example of using dbus-monitor to watch for the gnome typing monitor to say things

	 dbus-monitor "type='signal',sender='org.gnome.TypingMonitor',interface='org.gnome.TypingMonitor'"

AUTHOR

       dbus-monitor was written by Philip Blundell.  The profiling output mode was added by Olli Salli.

BUGS

       Please send bug reports to the D-Bus mailing list or bug tracker, see http://www.freedesktop.org/software/dbus/

																   dbus-monitor(1)