我有一台运行 Ubuntu 13.04 的笔记本电脑,配备 Intel(R) Core(TM) i5-2410M CPU @ 2.30GHz,可以正确报告cat /proc/cpuinfo
。但是,时钟速度列为800 MHz
:
lscpu
:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 2
Core(s) per socket: 2
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 42
Stepping: 7
CPU MHz: 800.000
BogoMIPS: 4589.60
Virtualization: VT-x
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 3072K
NUMA node0 CPU(s): 0-3
这是个问题吗?具体来说,ubuntu 能充分利用 CPU 吗?
答案1
这是当前速度。结果应与使用以下命令相同:
cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
该命令cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
将指示 CPU 的电源方案。
使用以下2个命令查看最大和最小频率(允许)。
cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq