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Configuring turbo mode on systems without the intel_pstate directory
on page 38
Configuring turbo mode on systems without the
intel_pstate
directory
About this task
The following procedure explains how to configure turbo mode.
Procedure
1.
Make sure that you configured a governor setting.
For information about how to configure a governor setting, see
Changing the governor setting on
systems without the intel_pstate directory
on page 35.
2.
Use the
cat
(1) command to retrieve the list of available frequencies. For example:
# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
3301000 3300000 3200000 3100000 3000000 2900000 2800000 2700000 2600000
2500000 2400000 2300000 2200000 2100000 2000000 1900000 1800000 1700000
1600000 1500000 1400000 1300000 1200000
The preceding output shows the available frequencies, listed in order from the highest, 3301000 KHz,
to the lowest, 1200000 KHz.
On MC990 X systems, the second frequency listed is always the processor nominal frequency. This is
a 3.3 GHz processor, so 3300000 KHz is the nominal frequency.
You can also obtain the nominal frequency by entering the following command and examining the
information in the model name field:
#
cat /proc/cpuinfo
3.
Use the
cpupower
command to set the frequency to the nominal frequency of 3.3 GHz plus 1 MHz.
That is, specify a frequency of 3301 MHz. For example:
#
cpupower frequency-set -u 3301MHz
Later, if you want to disable turbo mode, enter the following command to set the maximum frequency
back to the nominal frequency:
#
cpupower frequency-set -u 3300MHz
Additional Foundation Software utilities
This section includes information about additional Foundation Software commands and utilities that
typically require no user involvement. HPE technical support staff members might guide you in the use of
these commands when troubleshooting or tuning.
base-configuration
A collection of configuration scripts for MC990 X systems.
ha-stonith-plugins-uv
Provides STONITH agents to implement fencing on MC990 X systems through the RMC or CMC.
irqbalance
Controls interrupt request (IRQ) affinity on MC990 X systems. The daemon starts when a system
boots. If a device generates IRQs,
irqbalance
attempts to distribute the interrupts to the CPUs that
are on the same chassis (or node) upon which the interrupt originated.
38
Configuring turbo mode on systems without the
intel_pstate
directory
