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839 root
923 root
1343 root
1587 root
1746 root
1752 root
2151 root
2165 messageb
2166 root
2171 root
2235 root
2289 root
2403 root
2709 root
2714 root
If you press
changes to the format of the output.
The parameter -U UID monitors only the processes associated with a particular user.
Replace UID with the user ID of the user. top -U `id -u` returns the UID of the
user on the basis of the username and displays his processes.
17.7 System Information
17.7.1 System Activity Information: sar
To use sar, sadc (system activity data collector) needs to be running. Check its status
or start it with rcsysstat {start|status}.
sar can generate extensive reports on almost all important system activities, among
them CPU, memory, IRQ usage, IO, or networking. With its many options, it is too
complex to explain further here. Refer to the man page for extensive documentation
with examples.
17.7.2 Memory Usage: free
The utility free examines RAM usage. Details of both free and used memory and
swap areas are shown:
338
Installation and Administration
10
-5
0
13
-4
1712
552
10
-5
0
20
0
0
15
0
0
15
0
0
16
0
1464
496
16
0
3340 1048
15
0
1840
752
16
0
1600
516
15
0
1736
800
16
0
4192 2852 1444 S
23
0
1756
600
19
0
2668 1076
16
0
1756
648
while top is running, a menu opens with which to make extensive
F
0
0 S
0.0
0.0
344 S
0.0
0.1
0
0 S
0.0
0.0
0
0 S
0.0
0.0
0
0 S
0.0
0.0
0
0 S
0.0
0.0
416 S
0.0
0.1
792 S
0.0
0.2
556 S
0.0
0.1
320 S
0.0
0.1
652 S
0.0
0.2
0.0
0.6
524 S
0.0
0.1
944 S
0.0
0.2
564 S
0.0
0.1
0:00.02 reiserfs/0
0:00.67 udevd
0:00.00 khubd
0:00.00 shpchpd_event
0:00.00 w1_control
0:00.00 w1_bus_master1
0:00.00 acpid
0:00.64 dbus-daemon
0:00.01 syslog-ng
0:00.00 klogd
0:00.10 resmgrd
0:02.05 hald
0:00.00 hald-addon-acpi
0:00.00 NetworkManagerD
0:00.56 hald-addon-stor
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Troubleshooting
