我们刚买了一台配备E3-1240 v5 cpu的戴尔服务器(PowerEdge R330)：
processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 94 model name : Intel(R) Xeon(R) cpu E3-1240 v5 @ 3.50GHz stepping : 3 microcode : 0x9e cpu MHz : 3502.916 cache size : 8192 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 22 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dNowprefetch arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt bogomips : 7005.83 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical,48 bits virtual power management:
有四个这样的核心.该机器正在运行Debian 8,运行默认的Linux内核.
我们的内部工具之一需要检查/设置通常在以下位置找到的cpu调控器：/ sys / devices / system / cpu / cpu< N> / cpufreq / scaling_governor,其中< N>是核心数字.但是这些文件不存在.
看看cpufreq-info：
$cpufreq-info cpufrequtils 008: cpufreq-info (C) Dominik brodowski 2004-2009 Report errors and bugs to cpufreq@vger.kernel.org,please. analyzing cpu 0: no or unkNown cpufreq driver is active on this cpu maximum transition latency: 4294.55 ms. analyzing cpu 1: no or unkNown cpufreq driver is active on this cpu maximum transition latency: 4294.55 ms. analyzing cpu 2: no or unkNown cpufreq driver is active on this cpu maximum transition latency: 4294.55 ms. analyzing cpu 3: no or unkNown cpufreq driver is active on this cpu maximum transition latency: 4294.55 ms.
Linux是否真的不支持在这台机器上进行频率扩展,或者我是否需要安装一些东西？我需要在BIOS中设置一些设置吗？ cpufreq通常可以解决这个问题.
谢谢
