VMware vSphere vCenter Server 4.0 - Manual (Page 84)

Table A-3. Interactive Mode Single-Key Commands (Continued)
Key Description
# Prompts you for the number of statistics rows to display. Any value greater than 0 overrides automatic
determination of the number of rows to show, which is based on window size measurement. If you change this
number in one resxtop (or esxtop) panel, the change affects all four panels.
s Prompts you for the delay between updates, in seconds. Fractional values are recognized down to microseconds.
The default value is five seconds. The minimum value is two seconds. This command is not available in secure
mode.
W Write the current setup to an esxtop (or resxtop) configuration file. This is the recommended way to write a
configuration file. The default filename is the one specified by -c option, or ~/.esxtop4rc if the -c option is not
used. You can also specify a different filename on the prompt generated by this W command.
q Quit interactive mode.
c Switch to the CPU resource utilization panel.
m Switch to the memory resource utilization panel.
d Switch to the storage (disk) adapter resource utilization panel.
u Switch to storage (disk) device resource utilization screen.
v Switch to storage (disk) virtual machine resource utilization screen.
n Switch to the network resource utilization panel.
I Switch to the interrupt panel.
CPU Panel
The CPU panel displays server-wide statistics as well as statistics for individual world, resource pool, and
virtual machine CPU utilization.
Resource pools, running virtual machines, or other worlds are at times called groups. For worlds belonging
to a virtual machine, statistics for the running virtual machine are displayed. All other worlds are logically
aggregated into the resource pools that contain them.
Table A-4 discusses statistics displayed in this panel.
Table A-4. CPU Panel Statistics
Line Description
PCPU USED(%) A PCPU refers to a physical hardware execution context. This can be a physical CPU core if
hyperthreading is unavailable or disabled, or a logical CPU (LCPU or SMT thread) if hyperthreading
is enabled.
PCPU USED(%) displays:
n Percentage of CPU usage per PCPU
n percentage of CPU usage averaged over all PCPUs
CPU Usage (%USED) is the percentage of PCPU nominal frequency that was used since the last
screen update. It equals the total sum of %USED for Worlds that ran on this PCPU.
N
OTE
If a PCPU is running at frequency that is higher than its nominal (rated) frequency, then PCPU
USED(%) can be greater than 100%.
PCPU UTIL(%) A PCPU refers to a physical hardware execution context. This can be a physical CPU core if
hyperthreading is unavailable or disabled, or a logical CPU (LCPU or SMT thread) if hyperthreading
is enabled.
PCPU UTIL(%) represents the percentage of real time that the PCPU was not idle (raw PCPU
utilization) and it displays the percentage CPU utilization per PCPU, and the percentage CPU
utilization averaged over all PCPUs.
N
OTE
PCPU UTIL(%) might differ from PCPU USED(%) due to power management technologies
or hyperthreading.
vSphere Resource Management Guide
84 VMware, Inc.