diff options
Diffstat (limited to 'tools/power/cpupower/man/cpupower-set.1')
| -rw-r--r-- | tools/power/cpupower/man/cpupower-set.1 | 48 |
1 files changed, 27 insertions, 21 deletions
diff --git a/tools/power/cpupower/man/cpupower-set.1 b/tools/power/cpupower/man/cpupower-set.1 index 9dbd536518ab..8ac82b6f9189 100644 --- a/tools/power/cpupower/man/cpupower-set.1 +++ b/tools/power/cpupower/man/cpupower-set.1 @@ -3,7 +3,7 @@ cpupower\-set \- Set processor power related kernel or hardware configurations .SH SYNOPSIS .ft B -.B cpupower set [ \-b VAL ] [ \-s VAL ] [ \-m VAL ] +.B cpupower set [ \-b VAL | \-e POLICY | \-m MODE | \-t BOOL ] .SH DESCRIPTION @@ -19,7 +19,7 @@ described in the Options sections. Use \fBcpupower info \fP to read out current settings and whether they are supported on the system at all. -.SH Options +.SH OPTIONS .PP \-\-perf-bias, \-b .RS 4 @@ -55,34 +55,40 @@ Use \fBcpupower -c all info -b\fP to verify. This options needs the msr kernel driver (CONFIG_X86_MSR) loaded. .RE + .PP -\-\-sched\-mc, \-m [ VAL ] -.RE -\-\-sched\-smt, \-s [ VAL ] +\-\-epp, \-e .RS 4 -\-\-sched\-mc utilizes cores in one processor package/socket first before -processes are scheduled to other processor packages/sockets. +Sets the energy performance policy preference on supported Intel or AMD +processors which use the Intel or AMD P-State cpufreq driver respectively. -\-\-sched\-smt utilizes thread siblings of one processor core first before -processes are scheduled to other cores. +Available policies can be found with +\fBcat /sys/devices/system/cpu/cpufreq/policy0/energy_performance_available_preferences\fP : +.RS 4 +default performance balance_performance balance_power power +.RE -The impact on power consumption and performance (positiv or negativ) heavily -depends on processor support for deep sleep states, frequency scaling and -frequency boost modes and their dependencies between other thread siblings -and processor cores. +.RE -Taken over from kernel documentation: +.PP +\-\-amd\-pstate\-mode, \-m +.RS 4 +Sets the AMD P-State mode for supported AMD processors. +Available modes are "active", "guided" or "passive". + +Refer to the AMD P-State kernel documentation for further information. -Adjust the kernel's multi-core scheduler support. +.RE -Possible values are: -.RS 2 -0 - No power saving load balance (default value) +.PP +\-\-turbo\-boost, \-\-boost, \-t +.RS 4 +This option is used to enable or disable the boost feature on +supported Intel and AMD processors, and other boost supported systems. +(The --boost option is an alias for the --turbo-boost option) -1 - Fill one thread/core/package first for long running threads +This option takes as parameter either \fB1\fP to enable, or \fB0\fP to disable the feature. -2 - Also bias task wakeups to semi-idle cpu package for power -savings .RE .SH "SEE ALSO" |