1、cat /proc/loadavg
$ cat /proc/loadavg 6.83 6.52 6.77 9/7697 382398 You have new mail in /var/spool/mail/glc $
/proc/loadavg 各项数据的含义
/proc文件系统是一个虚拟的文件系统，不占用磁盘空间，它反映了当前操作系统在内存中的运行情况，查看/proc下的文件可以了解到系统的运行状态。
查看系统平均负载使用“cat /proc/loadavg”命令，输出结果如下：
6.83 6.52 6.77 9/7697 382398
前三个数字大家都知道，是1、5、15分钟内的平均进程数（有人认为是系统负荷的百分比，其实不然，有些时候可以看到200甚至更多）。
后面两个呢，一个的分子是正在运行的进程数，分母是进程总数；另一个是最近运行的进程ID号。
2、uptime
$ uptime 15:42:09 up 103 days, 23:49, 61 users, load average: 7.26, 6.68, 6.81$
3、w
$ w 15:42:48 up 103 days, 23:50, 61 users, load average: 6.62, 6.61, 6.78 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root pts/1 10.172.6.180 08:59 48.00s 0.14s 0.00s tmux at -t ygc root pts/25 10.142.104.90 13:02 29:52 1:29 1.06s mysql root pts/37 10.142.103.4 14:33 4:16 0.26s 0.11s ssh root@XXXXX root pts/47 10.142.103.4 14:01 8.00s 0.69s 0.62s -bash root pts/49 10.172.1.280 09:17 48.00s 1.19s 1.12s -bash root pts/48 10.172.1.280 12:44 1:12 0.13s 0.00s tmux a -t wjl root pts/52 10.172.1.280 09:18 55:12 0.19s 0.00s tmux new -s glc root pts/56 10.142.103.54 14:02 32.00s 0.22s 0.15s -bash root pts/53 10.142.104.90 09:18 8.00s 0.36s 0.17s w root pts/75 10.142.103.4 14:08 1:33m 0.28s 0.04s mysql root pts/78 10.142.103.4 14:40 22:40 1.57s 1.50s -bash root pts/79 10.142.103.4 14:09 8.00s 0.15s 0.08s -bash root pts/183 10.172.1.280 15:19 5:44 0.18s 0.03s ssh 10.142.26.14 root pts/184 10.172.6.180 15:26 2:00 0.22s 0.07s ssh root@hostname$
4、top
top - 15:49:10 up 103 days, 23:56, 64 users, load average: 6.32, 6.55, 6.71 Tasks: 6280 total, 11 running, 2395 sleeping, 0 stopped, 3874 zombie %Cpu(s): 20.8 us, 3.9 sy, 0.0 ni, 74.8 id, 0.0 wa, 0.0 hi, 0.6 si, 0.0 st KiB Mem : 13127068+total, 24441904 free, 14969144 used, 91859648 buff/cache KiB Swap: 12582908 total, 12582908 free, 0 used. 11109324+avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 53512 glc 20 0 117092 2696 524 R 85.4 0.0 0:02.74 audit.sh 48720 glc 20 0 128760 3512 2524 R 65.4 0.0 0:02.10 mysqldump 15668 glc 20 0 205564 13544 3828 S 14.0 0.0 9097:14 python 403643 glc 20 0 115504 1936 1384 S 1.6 0.0 1:22.16 mysql.sh 416270 root 20 0 160328 4844 3048 S 1.6 0.0 1:08.51 apple 53875 root 20 0 172556 7152 3424 S 1.2 0.0 0:00.04 python
5、tload
8.12, 7.08, 6.87