C:\wamp\bin\apache\Apache2.2.21\bin>ab.exe -n5 -c5 http://www.baidu.comab.exe: invalid URLUsage: ab.exe [options] [http://]hostname[:port]/pathOptions 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)

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).....doneServer Software:        BWS/1.1Server Hostname:        www.baidu.comServer Port:            80Document Path:          /Document Length:        77593 bytesConcurrency Level:      5Time taken for tests:   0.686 secondsComplete requests:      5Failed requests:        4   (Connect: 0, Receive: 0, Length: 4, Exceptions: 0)Write errors:           0Total transferred:      392317 bytesHTML transferred:       387997 bytesRequests 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] receivedConnection Times (ms)              min  mean[+/-sd] median   maxConnect:       54   63   7.4     66      71Processing:   228  360 100.7    402     475Waiting:       70  152  75.5    159     262Total:        284  423 103.9    463     546Percentage 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)