性能檢測工具

網站壓力檢測    

ab -c 10 -n 100 http://192.168.80.85/index.html        十個使用者每個使用者發100個請求

Server Hostname:        192.168.80.85

Server Port:            80

Document Path:          /index.html

Document Length:        8 bytes            

Concurrency Level:      10                    十個使用者請求

Time taken for tests:   0.026 seconds

Complete requests:      100                     每個使用者100個請求

Failed requests:        0

Write errors:           0

Total transferred:      27573 bytes

HTML transferred:       808 bytes

Requests per second:    3858.92 [#/sec] (mean)       共處了 3858.92

Time per request:       2.591 [ms] (mean)

Time per request:       0.259 [ms] (mean, across all concurrent requests)  處理時間   0.259 

Transfer rate:          1039.08 [Kbytes/sec] received

Connection Times (ms)

              min  mean[+/-sd] median   max

Connect:        0    1   0.2      1       2

Processing:     1    1   0.3      1       2

Waiting:        0    1   0.3      1       2

Total:          2    2   0.2      2       2

Percentage of the requests served within a certain time (ms)

  50%      2

  66%      2

  75%      2

  80%      2

  90%      2

  95%      2

  98%      2

  99%      2

 100%      2 (longest request)

uptime  檢視cpu

top  檢視硬體使用情況 

vmstat  檢視IO 和cpu記憶體  

yum install vmstat -y 

vnstat 檢視網卡流量 

yum install vnstat -y  

vnstat -l -i eth0

iostat檢視磁盤

yum install sysstat   

iostat -x -k 

iostat 

 檢視記憶體 

feer -m

檢視CPU

sar -u 1 2