cpufreq是一个动态调整cpu频率的模块,系统启动时生成一个文件夹/sys/devices/system/cpu/cpu0/cpufreq/,里面有几个文件,其中scaling_min_freq代表最低频率,scaling_max_freq代表最高频率,scalin_governor代表cpu频率调整模式,用它来控制CPU频率。 cd /sys/devices/system/cpu/cpu0/cpufreq/affected_cpus bios_limi...
文件路径 /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq 在大多数支持CPU频率调节的Linux系统中是正确的。确认你的系统是否确实应该包含这个文件。 检查用户是否具有读取该文件的权限: 使用以下命令查看文件的权限设置: bash ls -l /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq 如果文件存...
当policy的governor设置为“performance”时,还有每当scaling_max_freq或scaling_min_freq策略限制发生变化时,请求进行一次。 powersave 当附加到policy对象时,此governor会在“scaling_min_freq”策略限制内为该策略请求最低频率。 当policy的governor设置为powersave时,还有每当之后scaling_max_freq或scaling_min_freq策略...
好久没更新了，主要是不知道写些啥。最近在玩AWS EC2发现了一个小问题。 虽然默认给了IPv6但是你还...
static int amd_pstate_update_min_max_limit(struct cpufreq_policy *policy) { u32 max_limit_perf, min_limit_perf; struct amd_cpudata *cpudata = policy->driver_data; max_limit_perf = div_u64(policy->max * cpudata->highest_perf, cpudata->max_freq); min_limit_perf = div_u64(polic...
See this original bug that started it all:http://bugzilla.ganglia.info/cgi-bin/bugzilla/show_bug.cgi?id=114Cheers, Bernard --- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008.http:
@@ -1232,14 +1232,13 @@ static void amd_pstate_epp_update_limit(struct cpufreq_policy *policy) max_limit_perf = div_u64(policy->max * cpudata->highest_perf, cpudata->max_freq); min_limit_perf = div_u64(policy->min * cpudata->highest_perf, cpudata->max_freq);WRITE...
Looking at the contents of the /sys/devices/system/cpu/cpu*/cpufreq/scaling_max_freq files makes it possible to determine what CPU cores are Zen 4 and which are Zen 4C... In the case of the Ryzen 5 8500G, the Zen 4 cores all reported a 5.076GHz frequency while the Zen 4C cores...
> /sys/devices/system/cpu/cpu/X//cpufreq/scaling_max_freq is not available > so I compile vcgencmd to test it. > > |root@counter:~# vcgencmd measure_clock arm > frequency(48)=700000000 > > Is always 700 Mhz, also AFAIK, the RPi 1 only has 1 frequency: 700Mhz ... ...
* the cpufreq sysfs files or the intel_pstate sysfs files. */voidprintCpuValues(constCpu &cpu){if(Log::isOutputCapable()) { printVersion();std::ostringstreamoss; oss << Color::boldWhite() <<" pstate::"<< Color::boldGreen() ...