Linux 显示处理器速度
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show Processor speed
提问by user752949
I have a server with an AMD Opteron(tm) Processor 246 and a customised Linux kernel (2.6.9-100.ELhugemem) in it. When I check the processor using dmidecode, it displays a speed of 2000 MHz, whereas /proc/cpuinfoshows a speed of 1000MHz.
Can anybody explain this and also give me a method to check the current CPU speed?
我有一台带有 AMD Opteron(tm) 处理器 246 和定制 Linux 内核 (2.6.9-100.ELhugemem) 的服务器。当我使用 来检查处理器时dmidecode，它显示速度为 2000 MHz，而/proc/cpuinfo显示速度为 1000 MHz。任何人都可以解释这一点，并给我一种检查当前 CPU 速度的方法吗？
回答by ninjalj
What you are seeing is probably due to frequency scaling. You can see the minimum, maximum and current cpu frequency by:
您所看到的可能是由于频率缩放。您可以通过以下方式查看最小、最大和当前 CPU 频率：
cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq
cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
(Replace cpu0as appropiate).
（根据需要更换cpu0）。
回答by ninjagecko
see cpufreq-infoand cpufreq-setin http://www.thinkwiki.org/wiki/How_to_use_cpufrequtils
见cpufreq-info并cpufreq-set在http://www.thinkwiki.org/wiki/How_to_use_cpufrequutils
(may have to possibly install depending on distro)
（可能必须根据发行版进行安装）
