apache自带压力工具测试说明：
Usage: ab [options] [http[s]://]hostname[:port]/path
Options are:
-n requests Number of requests to perform 请求数
-c concurrency Number of multiple requests to make at a time 并发数
-t timelimit Seconds to max. to spend on benchmarking
This implies -n 50000
-s timeout Seconds to max. wait for each response
Default is 30 seconds
-b windowsize Size of TCP send/receive buffer, in bytes
-B address Address to bind to when making outgoing connections
-p postfile File containing data to POST. Remember also to set -T
-u putfile File containing data to PUT. Remember also to set -T
-T content-type Content-type header to use for POST/PUT data, eg.
'application/x-www-form-urlencoded'
Default is 'text/plain'
-v verbosity How much troubleshooting info to print
-w Print out results in HTML tables
-i Use HEAD instead of GET
-x attributes String to insert as table attributes
-y attributes String to insert as tr attributes
-z attributes String to insert as td or th attributes
-C attribute Add cookie, eg. 'Apache=1234'. (repeatable)
-H attribute Add Arbitrary header line, eg. 'Accept-Encoding: gzip'
Inserted after all normal header lines. (repeatable)
-A attribute Add Basic WWW Authentication, the attributes
are a colon separated username and password.
-P attribute Add Basic Proxy Authentication, the attributes
are a colon separated username and password.
[cxy@localhost-live ~]$ sudo ab -n 800 -c 800 http://xxx-xxx-xxx-xxx/
This is ApacheBench, Version 2.3 <$Revision: 1796539 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking 10.75.9.93 (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Finished 800 requests
Server Software: Apache/2.4.27
Server Hostname: 10.75.9.93
Server Port: 80
Document Path: /newstart-zte/
Document Length: 1593 bytes
Concurrency Level: 800
Time taken for tests: 0.854 seconds
Complete requests: 800
Failed requests: 0
Total transferred: 1421600 bytes
HTML transferred: 1274400 bytes
Requests per second: 937.15 [#/sec] (mean)
Time per request: 853.656 [ms] (mean)
Time per request: 1.067 [ms] (mean, across all concurrent requests)
Transfer rate: 1626.28 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 3 2.7 5 7
Processing: 10 171 190.3 48 845
Waiting: 10 171 190.3 48 845
Total: 17 174 191.7 50 850
Percentage of the requests served within a certain time (ms)
50% 50
66% 229
75% 283
80% 307
90% 482
95% 511
98% 837
99% 842
100% 850 (longest request)