System/cpu の編集

#topicpath

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* 目次 [#m646edfe]
#contents();

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* CPU 情報を得る [#get-cpu-info]
- /proc/cpuinfo を見る
 $ /proc/cpuinfo
- lscpu を使う
 $ lscpu

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* CPUの監視 [#fbc9e108]
//==============================================================================
** 温度・ファン回転数をモニタする [#v2f78e83]

*** パッケージ [#t4fe231c]
- debian では、以下のパッケージを使用する
-- lm-sensors
-- libsensors4 （それぞれのアーキテクチャに分かれている）
-- xsensors （Xのグラフィカルな画面で表示させたい場合に使用）

*** 実行 [#r8c505f9]
- 以下で確認が出来る：
 $ sensors
 acpitz-virtual-0
 Adapter: Virtual device
 temp1:        +44.0°C  (crit = +127.0°C)
 temp2:        +40.0°C  (crit = +104.0°C)
 
 thinkpad-isa-0000
 Adapter: ISA adapter
 fan1:           0 RPM
 temp1:        +44.0°C  
 temp2:        +41.0°C  
 temp3:            N/A  
 temp4:        +45.0°C  
 temp5:        +32.0°C  
 temp6:            N/A  
 temp7:        +31.0°C  
 temp8:            N/A  
 temp9:        +45.0°C  
 temp10:       +41.0°C  
 temp11:           N/A  
 temp12:           N/A  
 temp13:           N/A  
 temp14:           N/A  
 temp15:           N/A  
 temp16:           N/A  
 
 coretemp-isa-0000
 Adapter: ISA adapter
 Core 0:       +40.0°C  (high = +105.0°C, crit = +105.0°C)
 Core 1:       +40.0°C  (high = +105.0°C, crit = +105.0°C)

//==============================================================================
** Core i7, i5, i3 CPU の情報をモニタリングする [#yb6d4aa8]
- i7z コマンドを実行する 
- 出力例
 $ i7z
 Cpu speed from cpuinfo 2803.00Mhz
 cpuinfo might be wrong if cpufreq is enabled. To guess correctly try estimating via tsc
 Linux's inbuilt cpu_khz code emulated now
 True Frequency (without accounting Turbo) 2802 MHz
   CPU Multiplier 28x || Bus clock frequency (BCLK) 100.07 MHz
 
 Socket [0] - [physical cores=4, logical cores=8, max online cores ever=4]
   TURBO ENABLED on 4 Cores, Hyper Threading ON
   Max Frequency without considering Turbo 2902.07 MHz (100.07 x [29])
   Max TURBO Multiplier (if Enabled) with 1/2/3/4 Cores is  47x/47x/41x/41x
   Real Current Frequency 2043.86 MHz [100.07 x 20.42] (Max of below)
         Core [core-id]  :Actual Freq (Mult.)      C0%   Halt(C1)%  C3 %   C6 %  Temp      VCore
         Core 1 [0]:       1901.43 (19.00x)      30.8    79.1       0       0    73      0.9974
         Core 2 [1]:       1935.70 (19.34x)      29.1    79.9       0       0    77      0.9500
         Core 3 [2]:       1906.39 (19.05x)      29.1    80.2       0       0    77      0.9674
         Core 4 [3]:       2043.86 (20.42x)      33.1    75.8       0       0    77      1.0425
 
 
 
 C0 = Processor running without halting
 C1 = Processor running with halts (States >C0 are power saver modes with cores idling)
 C3 = Cores running with PLL turned off and core cache turned off
 C6, C7 = Everything in C3 + core state saved to last level cache, C7 is deeper than C6
   Above values in table are in percentage over the last 1 sec
 [core-id] refers to core-id number in /proc/cpuinfo
 'Garbage Values' message printed when garbage values are read
   Ctrl+C to exit

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* CPU fan の制御 [#j6f87d71]
- デバイスの確認
 # sensors-detect
 Driver `coretemp':
   * Chip `Intel digital thermal sensor' (confidence: 9)
 
 To load everything that is needed, add this to /etc/modules:
 #----cut here----
 # Chip drivers
 coretemp
 #----cut here----
 If you have some drivers built into your kernel, the list above will
 contain too many modules. Skip the appropriate ones!
 
 Do you want to add these lines automatically to /etc/modules? (yes/NO)yes
 Successful!
 
 Monitoring programs won't work until the needed modules are
 loaded. You may want to run '/etc/init.d/kmod start'
 to load them.
 
 Unloading i2c-dev... OK
 Unloading cpuid... OK

//==============================================================================
** 参考リンク [#z5d47cac]
- [[ファンスピード制御 - ArchWiki>https://wiki.archlinux.jp/index.php/%E3%83%95%E3%82%A1%E3%83%B3%E3%82%B9%E3%83%94%E3%83%BC%E3%83%89%E5%88%B6%E5%BE%A1]]

#topicpath

////////////////////////////////////////////////////////////////////////////////
* 目次 [#m646edfe]
#contents();

////////////////////////////////////////////////////////////////////////////////
* CPU 情報を得る [#get-cpu-info]
- /proc/cpuinfo を見る
 $ /proc/cpuinfo
- lscpu を使う
 $ lscpu

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