linux nice 实时,linux中nice和renice调度优先
nice命令: nice -n
nice命令可以在启动命令时设置优先级！
[root@localhost ~]# nice -n 10 ./test39.sh > test39out &
[1] 7753
[root@localhost ~]# ps al
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
4 0 2151 1 22 0 1664 420 - Ss+ tty1 0:00 /sbin/mingetty
4 0 2162 1 22 0 1664 420 - Ss+ tty2 0:00 /sbin/mingetty
4 0 2167 1 22 0 1664 424 - Ss+ tty3 0:00 /sbin/mingetty
4 0 2170 1 22 0 1664 420 - Ss+ tty4 0:00 /sbin/mingetty
4 0 2173 1 25 0 1664 420 - Ss+ tty5 0:00 /sbin/mingetty
4 0 2203 1 25 0 1664 420 - Ss+ tty6 0:00 /sbin/mingetty
4 0 6904 6902 15 0 5080 1640 wait Ss pts/1 0:00 -bash
0 0 7753 6904 27 10 4736 992 finish TN pts/1 0:00 /bin/bash ./tes
4 0 7754 6904 17 0 4460 812 - R+ pts/1 0:00 ps al
[1]+ Stopped nice -n 10 ./test39.sh > test39out
nice命令: nice -n nice命令可以在启动命令时设置优先级！ [root@localhost ~]# nice -n 10 ./test39.sh > test39out & [1] 7753 [root@localhost ~]# ps al F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND 4 0 2151 1 22 0 1664 420 - Ss+ tty1 0:00 /sbin/mingetty 4 0 2162 1 22 0 1664 420 - Ss+ tty2 0:00 /sbin/mingetty 4 0 2167 1 22 0 1664 424 - Ss+ tty3 0:00 /sbin/mingetty 4 0 2170 1 22 0 1664 420 - Ss+ tty4 0:00 /sbin/mingetty 4 0 2173 1 25 0 1664 420 - Ss+ tty5 0:00 /sbin/mingetty 4 0 2203 1 25 0 1664 420 - Ss+ tty6 0:00 /sbin/mingetty 4 0 6904 6902 15 0 5080 1640 wait Ss pts/1 0:00 -bash 0 0 7753 6904 27 10 4736 992 finish TN pts/1 0:00 /bin/bash ./tes 4 0 7754 6904 17 0 4460 812 - R+ pts/1 0:00 ps al [1]+ Stopped nice -n 10 ./test39.sh > test39out