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1: 2015-02-15 (日) 11:16:49 macsatou  |
| | + | *raspberry pi2 [#z8cb3e19] |
| | | | |
| | + | **raspberry piをpi2に移行する時の手順 [#b38fe538] |
| | + | raspberry piでまずは作業 |
| | + | #apt-get update |
| | + | #apt-get dist-upgrade |
| | + | #rpi-update |
| | + | |
| | + | **raspberry pi2のOverClock [#e84142c7] |
| | + | 何かあっても責任は取りませんよ。 |
| | + | デフォルト？（私は何時もこれで動かしてます） |
| | + | #vi /boot/config.txt |
| | + | arm_freq=900 |
| | + | sdram_freq=450 |
| | + | core_freq=450 |
| | + | over_voltage=0 |
| | + | |
| | + | ★一段階目 |
| | + | #vi /boot/config.txt |
| | + | arm_freq=1000 |
| | + | sdram_freq=500 |
| | + | core_freq=500 |
| | + | over_voltage=2 |
| | + | 確認 |
| | + | ・温度（34428と出たら34.428度と読み替え） |
| | + | #cat /sys/class/thermal/thermal_zone0/temp |
| | + | ・最大スピード |
| | + | #cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq |
| | + | ・現在のスピード |
| | + | cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq |
| | + | |
| | + | ★二段階目（爆熱で死ぬので冷却を考慮すること） |
| | + | #vi /boot/config.txt |
| | + | force_turbo=1 #Voids Warranty!!! |
| | + | arm_freq=1100 |
| | + | sdram_freq=500 |
| | + | core_freq=500 |
| | + | over_voltage=6 |
| | + | temp_limit=80 #Will throttle to default clock speed if hit. |
| | + | |
| | + | ★自分で工夫したい人は下記パラメータを自由に設定してね |
| | + | |
| | + | ・arm_freq- Frequency of ARM in MHz. |
| | + | ・core_freq -Frequency of GPU processor core in MHz. It has an impact on ARM performance since it drives L2 cache.sdram_freq -Frequency of SDRAM in MHz. |
| | + | ・over_voltage – ARM/GPU core voltage adjust. Values above 6 are only allowed when force_turbo or current_limit_override are specified (which set the warranty bit). |
| | + | ・force_turbo – Disables dynamic cpufreq driver and minimum settings below. Voids Warranty. |
| | + | ・initial_turbo -Enables turbo mode from boot for the given value in seconds (up to 60) or until cpufreq sets a frequency. Default 0 |
| | + | ・arm_freq_min – Minimum value of arm_freq used for dynamic clocking. |
| | + | ・core_freq_min – Minimum value of core_freq used for dynamic clocking. |
| | + | ・sdram_freq_min – Minimum value of sdram_freq used for dynamic clocking. |
| | + | ・temp_limit – Overheat protection. Sets clocks and voltages to default when the SoC reaches this Celsius value. Setting this higher than default voids warranty. Default 85 |
| | + | ・disable_splash – If set to 1, avoids the rainbow splash screen on boot. |
| | + | ・boot_delay - Wait for x number of seconds in start.elf before loading kernel. Default 1 |
| | + | ・gpu_mem - GPU memory in megabyte. Sets the memory split between the ARM and GPU. ARM gets the remaining memory. |
| | + | |
| | + | 性能が6倍になっているのでOCして、OpenSimを入れ込みたいと思う。 |
| | + | すでにPiでやっている人もいる。 |
| | + | http://rikachann.slmame.com/e1375237.html |
