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关闭linux服务器的CPU自动降频

作者：美云 发布日期：2015/4/11 11:22:47 浏览次数：13349 复制

HP DL360 G8 没有地方找到stepspeed。。。

后来发现可能是内部的服务降频


grep -E '^model name|^cpu MHz' /proc/cpuinfo
model name      : Intel(R) Core(TM) i7 CPU         920  @ 2.67GHz
cpu MHz         : 1600.000
...
先测试下能否通过sys配置修改：
for CPUFREQ in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do [ -f $CPUFREQ ] || continue; echo -n performance > $CPUFREQ; done
[root@boston07 ~]# grep -E '^model name|^cpu MHz' /proc/cpuinfo
model name      : Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
cpu MHz         : 2394.000
model name      : Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
cpu MHz         : 2394.000
永久关闭：

5) If you are running 'cpuspeed', 'cpufreqd', 'powerd' or other daemons, that can control CPU stepping, just stop them, if you really need to run your system on 100% of the CPU speed.
On CentOS:
# service cpuspeed stop
1:


6) On Linux 2.6.32 (On RedHat 6, and Oracle Unbreakable Linux 6) remove CPU scaling kernel modules:
# lsmod | grep ondemand
cpufreq_ondemand        8764  0 
freq_table              3751  2 cpufreq_ondemand,acpi_cpufreq
# rmmod cpufreq_ondemand acpi_cpufreq freq_table
 
参考：

http://www.experts-exchange.com/OS/Linux/Administration/A_3492-Avoiding-CPU-speed-scaling-in-modern-Linux-distributions-Running-CPU-at-full-speed-Tips.html