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Top Forums UNIX for Dummies Questions & Answers What to monitor for memory usage? Post 302538112 by karlochacon on Monday 11th of July 2011 11:01:35 PM
Old 07-12-2011
What to monitor for memory usage?

hi guys

I am having a doubt about memory monitoring on linux system
what I should be monitoring? memory usage? o swap usage?

I am using some monitoring tools but I am confused to what monitor for alerting

for example this case
looks the memory usage is very high and it's like that all the time
so is it memory usage or swap usage? in case swap is the metric what should be threshold ?

Code:
Mem:   2738708k total,  2620784k used,   117924k free,   107872k buffers
Swap:  2104472k total,      240k used,  2104232k free,   837772k cached

thanks a lot guys
 

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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)
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