C:\wamp\bin\apache\Apache2.2.21\bin>ab.exe -n5 -c5 http://www.baidu.com
ab.exe: invalid URL
Usage: ab.exe [options] [http://]hostname[:port]/path
Options are:
-n requests Number of requests to perform
-c concurrency Number of multiple requests to make
-t timelimit Seconds to max. wait for responses
-b windowsize Size of TCP send/receive buffer, in bytes
-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 for POSTing, 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.
-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.
-h Display usage information (this message)

记得要在最后面加上/

C:\wamp\bin\apache\Apache2.2.21\bin>ab.exe -n5 -c5 http://www.baidu.com/
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/ Benchmarking www.baidu.com (be patient).....done Server Software: BWS/1.1
Server Hostname: www.baidu.com
Server Port: 80 Document Path: /
Document Length: 77593 bytes Concurrency Level: 5
Time taken for tests: 0.686 seconds
Complete requests: 5
Failed requests: 4
(Connect: 0, Receive: 0, Length: 4, Exceptions: 0)
Write errors: 0
Total transferred: 392317 bytes
HTML transferred: 387997 bytes
Requests per second: 7.29 [#/sec] (mean)
Time per request: 686.039 [ms] (mean)
Time per request: 137.208 [ms] (mean, across all concurrent requests)
Transfer rate: 558.46 [Kbytes/sec] received Connection Times (ms)
min mean[+/-sd] median max
Connect: 54 63 7.4 66 71
Processing: 228 360 100.7 402 475
Waiting: 70 152 75.5 159 262
Total: 284 423 103.9 463 546 Percentage of the requests served within a certain time (ms)
50% 439
66% 487
75% 487
80% 546
90% 546
95% 546
98% 546
99% 546
100% 546 (longest request)
05-04 03:05