Linux 指定进程为RR\FIFO进程，设置优先级，绑定运行cpu

执行c代码

#include<sched.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<errno.h>
#include <math.h>

int main(int argc,char **argv)
{

	long i,j,temp;
	char cmd_str[100];
	int rc,current_scheduler_policy;
	unsigned long mask=(unsigned long)atoi(argv[3]); /* processor 0 ->valu=1,and processor 1->value=2 */
	struct sched_param my_params;//将要设置的调度参数
	
	printf("The argc value = %d,arv[3]=%d,hope is=1, argv[2]=%d,hope is=90+,argv[1]=%d\n",argc,atoi(argv[3]),atoi(argv[2]),atoi(argv[1]));
	/*if(argc!=4){
	printf("usage:RR-FIFO-sched sched_class priority\nsched_class: 0 for CFS;1 for FIFO;2 for RR\n");
	exit(1);
	}*/
	//增加绑定进程
	if (sched_setaffinity(0, sizeof(mask), &mask) <0) {
		 perror("sched_setaffinity");
	     }

	my_params.sched_priority = atoi(argv[2]);
	rc = sched_setscheduler(0,atoi(argv[1]),&my_params);

	if(rc<0){
		perror("sched_setscheduler error\n");	
		exit(0);
	}

	current_scheduler_policy = sched_getscheduler(0);
	printf("the  PID:%d current scheduler=%d\n",getpid(),current_scheduler_policy);

	for(i=0;i<1024*1024*1024;i++){
		for(j=0;j<10;j++)
			temp++;
	}
	
	//while(1);
	
	sprintf(cmd_str,"cat /proc/%d/sched > ./sched-%d; date >> ./sched-%d",getpid(),getpid(),getpid());//sprintf 
	system(cmd_str);//记录各个进程的/proc/PID/sched以及时间信息
	return 0;

}

　通过gcc 链接成可执行文件RR-FIFO2 

shell可执行脚本：

#!/usr/bin/bash
echo Running a shell
#./RR-FIFO-sched 2 90 1&
#./RR-FIFO-sched 2 90 1&
#taskset -c 0 ./RR-FIFO-sched 2 90&
#taskset -c 0 ./RR-FIFO-sched 2 90&
#sleep 5s
#taskset -c 0 ./RR-FIFO-sched 1 95&
#./RR-FIFO-sched 1 95 1&
# SCRIP 3
./RR-FIFO2 2 90 1& # 2 -指定进程为RR类 ， 90-priority 1 -绑定到cpu 0 &挂起
./RR-FIFO2 2 90 1&
sleep 5s
./RR-FIFO2 1 95 1&# 2 -指定进程为FIFO类 ， 90-priority 1 -绑定到cpu 0 &挂起