apache自带的ab输出结果说明

ab -n 200 -c 10 http://www.baidu.com/


默认使用http1.0协议，但是可以支持keepalive
-k Use HTTP KeepAlive feature
#############################################
结果如下

Benchmarking www.baidu.com (be patient)
Completed 100 requests Finished 200 requests
Server Software:        BWS/1.0
Server Hostname:        www.baidu.com Server
Port:            80
Document Path:          /
Document Length:        8024 bytes
# 请求的文件的大小
Concurrency Level:      10
# 并发用户数
Time taken for tests:   31.38024 seconds
# 所有请求被处理完成所话费的总时间
Complete requests:      200
Failed requests:        0
Write errors:           0
Total transferred:      1690800 bytes
# 所有请求的响应数据长度总和，含头和正文数据长度。注意不包括HTTP请求数据的长度
HTML transferred:       1612872 bytes
# 所有请求的响应数据中正文数据的总和。也就是没有头.
Requests per second:    6.44 [#/sec] (mean)
# 吞吐率
Time per request:       1551.901 [ms] (mean)
# 用户平均请求等待时间
Time per request:       155.190 [ms] (mean, across all concurrent requests)
# 服务器平均请求处理时间,吞吐率的倒数 Time taken for tests/Complete requests
Transfer rate:          53.19 [Kbytes/sec] received
# 单位时间内响应的数据量
Connection Times (ms)
min  mean[+/-sd] median   max
Connect:        3  441 717.2    287    3329
Processing:   115 1008 905.0    720    4563
Waiting:        4  301 130.3    298     881
Total:        118 1449 1227.4   1045    7702

Percentage of the requests served within a certain time (ms)
# 每个请求处理时间的分布
50%   1045
66%   1394
75%   1710
80%   1863
90%   3171
95%   4336
98%   4919
99%   7610
100%   7702 (longest request)

本文出自 “君子博学而日参省乎己..” 博客，请务必保留此出处http://linuxgp.blog.51cto.com/1708668/897268