projects / deliverable / linux.git / blame
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1 | .TH CPUPOWER "1" "07/03/2011" "" "cpupower Manual" |
| 2 | .SH NAME | |
| 3 | cpupower \- Shows and sets processor power related values | |
| 4 | .SH SYNOPSIS | |
| 5 | .ft B | |
| 498ca793 | 6 | .B cpupower [ \-c cpulist ] <command> [ARGS] |
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7 | |
| 8 | .B cpupower \-v|\-\-version | |
| 9 | ||
| 10 | .B cpupower \-h|\-\-help | |
| 11 | ||
| 12 | .SH DESCRIPTION | |
| 13 | \fBcpupower \fP is a collection of tools to examine and tune power saving | |
| 14 | related features of your processor. | |
| 15 | ||
| 498ca793 | 16 | The manpages of the commands (cpupower\-<command>(1)) provide detailed |
| 7fe2f639 | 17 | descriptions of supported features. Run \fBcpupower help\fP to get an overview |
| 498ca793 | 18 | of supported commands. |
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19 | |
| 20 | .SH Options | |
| 21 | .PP | |
| 22 | \-\-help, \-h | |
| 23 | .RS 4 | |
| 498ca793 | 24 | Shows supported commands and general usage. |
| 7fe2f639 DB |
25 | .RE |
| 26 | .PP | |
| 27 | \-\-cpu cpulist, \-c cpulist | |
| 28 | .RS 4 | |
| 29 | Only show or set values for specific cores. | |
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30 | This option is not supported by all commands, details can be found in the |
| 31 | manpages of the commands. | |
| 7fe2f639 | 32 | |
| 498ca793 | 33 | Some commands access all cores (typically the *\-set commands), some only |
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34 | the first core (typically the *\-info commands) by default. |
| 35 | ||
| 36 | The syntax for <cpulist> is based on how the kernel exports CPU bitmasks via | |
| 37 | sysfs files. Some examples: | |
| 38 | .RS 4 | |
| 39 | .TP 16 | |
| 40 | Input | |
| 41 | Equivalent to | |
| 42 | .TP | |
| 43 | all | |
| 44 | all cores | |
| 45 | .TP | |
| 46 | 0\-3 | |
| 47 | 0,1,2,3 | |
| 48 | .TP | |
| 49 | 0\-7:2 | |
| 50 | 0,2,4,6 | |
| 51 | .TP | |
| 52 | 1,3,5-7 | |
| 53 | 1,3,5,6,7 | |
| 54 | .TP | |
| 55 | 0\-3:2,8\-15:4 | |
| 56 | 0,2,8,12 | |
| 57 | .RE | |
| 58 | .RE | |
| 59 | .PP | |
| 60 | \-\-version, \-v | |
| 61 | .RS 4 | |
| 62 | Print the package name and version number. | |
| 63 | ||
| 64 | .SH "SEE ALSO" | |
| 65 | cpupower-set(1), cpupower-info(1), cpupower-idle(1), | |
| 66 | cpupower-frequency-set(1), cpupower-frequency-info(1), cpupower-monitor(1), | |
| 67 | powertop(1) | |
| 68 | .PP | |
| 69 | .SH AUTHORS | |
| 70 | .nf | |
| 71 | \-\-perf\-bias parts written by Len Brown <len.brown@intel.com> | |
| 72 | Thomas Renninger <trenn@suse.de> |