taskset是linux自带的一个命令，可用来将进程绑定到指定CPU
相关的函数有: sched_setaffinity, CPU_CLR, CPU_ISSET, CPU_SET, CPU_ZERO
相关的函数有: sched_setaffinity, CPU_CLR, CPU_ISSET, CPU_SET, CPU_ZERO
- // cpufreq库可在/usr/lib目录下找到
- // 编译: g++ -g -o x x.cpp -lcpufreq
- // 需要以root用户执行以下代码
- //#include cpufreq.h>
- #include stdio.h>
- #include sys/sysinfo.h> // get_nprocs
-
- // 如果不存在/usr/include/cpufreq.h
- #ifndef _CPUFREQ_H
- extern "C" int cpufreq_cpu_exists(unsigned int cpu);
- extern "C" unsigned long cpufreq_get_freq_kernel(unsigned int cpu);
- extern "C" unsigned long cpufreq_get_freq_hardware(unsigned int cpu);
- extern "C" int cpufreq_get_hardware_limits(unsigned int cpu, unsigned long *min, unsigned long *max);
- #endif
-
- int main()
- {
- // 取得cpu core的个数，proc是processor的意思
- int nprocs = get_nprocs();
- for (int i=0; inprocs; ++i)
- {
- if (0 == cpufreq_cpu_exists(i))
- {
- unsigned long min_freq = 0;
- unsigned long max_freq = 0;
- cpufreq_get_hardware_limits(i, &min_freq, &max_freq);
-
- printf("cpu[%d]:\n", i);
- printf("min_freq: %lu, max_freq: %lu\n", min_freq, max_freq);
- printf("kernel freq: %lu, hardware freq: %lu\n", cpufreq_get_freq_kernel(i), cpufreq_get_freq_hardware(i));
- printf("\n");
- }
- }
-
- return 0;
- }
