ab 压力测试

</pre><pre name="code" class="plain">D:\wamp\Apache24\bin>ab -hUsage: ab [options] [http://]hostname[:port]/pathOptions 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.    -h              Display usage information (this message)D:\wamp\Apache24\bin>ab -n100 -c10 http://www.baidu.com/This is ApacheBench, Version 2.3 <$Revision: 1554214 $>Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.neLicensed to The Apache Software Foundation, http://www.apache.org/Benchmarking www.baidu.com (be patient)...Server Software:        BWS/1.1Server Hostname:        www.baidu.comServer Port:            80Document Path:          /Document Length:        81437 bytesConcurrency Level:      10Time taken for tests:   34.992 secondsComplete requests:      89Failed requests:        68   (Connect: 0, Receive: 0, Length: 68, Exceptions: 0)Total transferred:      7875119 bytesHTML transferred:       7790014 bytesRequests per second:    2.54 [#/sec] (mean)Time per request:       3931.696 [ms] (mean)Time per request:       393.170 [ms] (mean, across all concurrent requTransfer rate:          219.78 [Kbytes/sec] receivedConnection Times (ms)              min  mean[+/-sd] median   maxConnect:        0   10  10.4     16      47Processing:    78 1227 1439.2    703    7397Waiting:        0   40  52.7     16     219Total:         78 1236 1439.5    711    7397Percentage of the requests served within a certain time (ms)  50%    703  66%    859  75%   1609  80%   1766  90%   3391  95%   3771  98%   6756  99%   7397 100%   7397 (longest request)