如何查看CPU 占用率
以下是查看CPU占用率的一个脚本
/export/home/arbsfr/SFR_ENTREPRISE/SFRE3/cpu_record.sh
And you can run it as below :sh cpu_record.sh <CAP pid>
#!bin/sh
/usr/ucb/ps -auxww | grep '%CPU' | grep -v 'grep'
while [ 1 ]
do
/usr/ucb/ps -auxww | grep $1 | grep -v 'cpu_record.sh' | grep -v 'grep'
sleep 10
done
发现他用的是/usr/ucb/ps 而不是我们通常用的ps（/bin/ps).
/usr/ucb这个目录里面放的是Berkley 的命令，属于历史遗留命令.Both /usr/bin/ps and /usr/ucb/ps are hard link to /usr/lib/isaexec, which analyses the path and execute the binary differently. /usr/ucb/ps is Berkley style and /usr/bin/ps is SVR4 style. However, they are the same file.
运行脚本后我们可以查看CPU的占用率如下所示：
USER PID %CPU %MEM SZ RSS TT S START TIME COMMAND arbsfr 8331 0.2 0.17315263944 pts/32 S 08:23:35 0:06 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.4 0.17724868040 pts/32 O 08:23:35 0:14 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.4 0.1122304113096 pts/32 O 08:23:35 0:19 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.5 0.1155072145864 pts/32 O 08:23:35 0:27 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.5 0.2167360158152 pts/32 O 08:23:35 0:35 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.6 0.2179648170440 pts/32 O 08:23:35 0:42 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.6 0.2224704215496 pts/32 O 08:23:35 0:50 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.6 0.2269760260552 pts/32 O 08:23:35 0:58 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.6 0.3306624297416 pts/32 O 08:23:35 1:06 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.6 0.3359872350664 pts/32 O 08:23:35 1:13 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.6 0.3404928395872 pts/32 O 08:23:35 1:19 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.6 0.3404928395872 pts/32 O 08:23:35 1:26 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.6 0.3404928395872 pts/32 S 08:23:35 1:32 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.5 0.3409024399968 pts/32 S 08:23:35 1:39 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.5 0.3409024399968 pts/32 O 08:23:35 1:45 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.5 0.4429760421056 pts/32 O 08:23:35 1:52 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.6 0.4429760421064 pts/32 S 08:23:35 2:00 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.6 0.4429760421064 pts/32 O 08:23:35 2:07 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.6 0.4429760421064 pts/32 O 08:23:35 2:13 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.5 0.4429760421064 pts/32 S 08:23:35 2:19 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4 arbsfr 8331 0.6 0.4429760421256 pts/32 O 08:23:35 2:27 /export/home/arbsfr/helen/797/bin/CAP.yy cap08 4