Linux 服务器压测

执行下面的命令开启测试

 for i in `seq 1 $(cat /proc/cpuinfo |grep "physical id" |wc -l)`; do dd if=/dev/zero of=/dev/null & done



09:54:18 AM  CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle
09:54:20 AM  all    8.35    0.00    2.62    0.00    0.37    0.37    0.00    0.00    0.00   88.28
09:54:20 AM    0    1.00    0.00    0.50    0.00    0.50    0.50    0.00    0.00    0.00   97.50
09:54:20 AM    1   23.00    0.00    4.50    0.00    0.50    0.00    0.00    0.00    0.00   72.00
09:54:20 AM    2    4.95    0.00    2.48    0.00    0.50    0.50    0.00    0.00    0.00   91.58
09:54:20 AM    3    4.50    0.00    3.00    0.00    0.00    0.50    0.00    0.00    0.00   92.00

09:54:20 AM  CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle
09:54:22 AM  all    7.64    0.00    2.63    0.00    0.25    0.13    0.00    0.00    0.00   89.35
09:54:22 AM    0    4.06    0.00    1.52    0.00    0.00    0.00    0.00    0.00    0.00   94.42
09:54:22 AM    1   13.43    0.00    3.98    0.00    0.50    0.00    0.00    0.00    0.00   82.09
09:54:22 AM    2   11.06    0.00    2.51    0.00    0.00    0.50    0.00    0.00    0.00   85.93
09:54:22 AM    3    1.99    0.00    2.49    0.00    0.50    0.00    0.00    0.00    0.00   95.02

执行下面的命令结束测试

killall dd