ab压力测试

ab -h:

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Usage: ab [options] [http[s]://]hostname[:port]/path
Options are:
-n requests Number of requests to perform
-c concurrency Number of multiple requests to make at a time
-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.
-X proxy:port Proxyserver and port number to use
-V Print version number and exit
-k Use HTTP KeepAlive feature
-d Do not show percentiles served table.
-S Do not show confidence estimators and warnings.
-q Do not show progress when doing more than 150 requests
-l Accept variable document length (use this for dynamic pages)
-g filename Output collected data to gnuplot format file.
-e filename Output CSV file with percentages served
-r Don't exit on socket receive errors.
-m method Method name
-h Display usage information (this message)
-Z ciphersuite Specify SSL/TLS cipher suite (See openssl ciphers)
-f protocol Specify SSL/TLS protocol
(SSL3, TLS1, TLS1.1, TLS1.2 or ALL)

示例:

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 ab -n1000 -c100 http://www.php-z.com/
This is ApacheBench, Version 2.3 <$Revision: 1706008 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking www.php-z.com (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
Completed 900 requests
Completed 1000 requests
Finished 1000 requests


Server Software: nginx
Server Hostname: www.php-z.com
Server Port: 80

Document Path: /
Document Length: 91829 bytes

Concurrency Level: 100
Time taken for tests: 160.780 seconds
Complete requests: 1000
Failed requests: 0
Total transferred: 92856000 bytes
HTML transferred: 91829000 bytes
Requests per second: 6.22 [#/sec] (mean)
Time per request: 16077.996 [ms] (mean)
Time per request: 160.780 [ms] (mean, across all concurrent requests)
Transfer rate: 564.00 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 12 1458 658.9 1597 4155
Processing: 7372 14115 2567.7 13918 38222
Waiting: 173 1797 1086.2 1685 12531
Total: 7385 15574 2530.0 15502 39698

Percentage of the requests served within a certain time (ms)
50% 15502
66% 15783
75% 16013
80% 16244
90% 17377
95% 19670
98% 23966
99% 26826
100% 39698 (longest request)