[PDF] Parallels Server 5 Bare Metal

Viewing Active Processes and Services
Managing Services and Processes
The vzps utility provides certain additional functionality related to monitoring separate Containers
running on the Parallels server. For example, you can use the -E switch with the vzps utility to:
• display the Container IDs where the processes are running
• view the processes running inside a particular Container
vzps prints the information about active processes on your Parallels server. When run without any
options, vzps lists only those processes that are running on the current terminal. Below is an
example output of the vzps run:
$ vzps
PID TTY TIME CMD
4684 pts/1 00:00:00 bash
27107 pts/1 00:00:00 vzps
Currently, the only processes assigned to the user/terminal are the bash shell and the vzps
command itself. In the output, the PID (Process ID), TTY, TIME, and CMD fields are contained. TTY
denotes which terminal the process is running on, TIME shows how much CPU time the process
has used, and CMD is the name of the command that started the process.
Note: The IDs of the processes running inside Containers and displayed by running the vzps command
on the Parallels server does not coincide with the IDs of the same processes shown by running the ps
command inside these Containers.
As you can see, the standard vzps command just lists the basics. To get more details about the
processes running on your server, you will need to pass some command line arguments to vzps.
For example, using the aux arguments with this command displays processes started by other
users (a), processes with no terminal or one different from yours (x), the user who started the
process and when it began (u). Besides, you can pass vzps the -E switch to sort the processes
by the Container IDs where they are running.
# vzps aux -E
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 1516 128 ? S Jul14 0:37 init
root 5 0.0 0.0 0 0 ? S Jul14 0:03 [ubstatd]
root 6 0.0 0.0 0 0 ? S Jul14 3:20 [kswapd]
#27 7 0.0 0.0 0 0 ? S Jul14 0:00 [bdflush]
root 9 0.0 0.0 0 0 ? S Jul14 0:00 [kinoded]
root 1574 0.0 0.1 218 140 pts/4 S 09:30 0:00 -bash
There is a lot more information now. The fields USER, %CPU, %MEM, VSZ, RSS, STAT, and
START have been added. Let us take a quick look at what they tell us.
The USER field shows you which user initiated the command. Many processes begin at system
start time and often list root or some system account as the USER. Other processes are, of course,
run by individuals.
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