apache comes with the use of stress testing tool for windows

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ab's full name is ApacheBench, is the WEB Apache stress test with a small tool designed specifically for the HTTP Server benchmark testing, can simulate multiple concurrent requests.

Command: ab-n 10-c 10 http://www.baidu.com/
Meaning: to www.baidu.com send 10 requests (-n 10), and 10 per concurrent request (-c 10)
The following is the output of the test report ab

C: \ Java \ Tools \ ab> ab-n 10-c 10 http://www.baidu.com/
This is ApacheBench, Version 2.0.41-dev <$ Revision: 1.121.2.12 $> apache-2.0
Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright (c) 1998-2002 The Apache Software Foundation, http://www.apache.org/

Benchmarking www.baidu.com (be patient )..... done

Server Software: BWS/1.0
Server Hostname: www.baidu.com
Server Port: 80

Document Path: /
Document Length: 6759 bytes

Concurrency Level: 10
Time taken for tests: 0.406244 seconds
Complete requests: 10
Failed requests: 0
Write errors: 0
Total transferred: 71410 bytes
HTML transferred: 67590 bytes

/ * These three should be the parameters we care about most, according to the literal meaning, it is easy to understand * /
Requests per second: 24.62 [# / sec] (mean)
Time per request: 406.244 [ms] (mean)
Time per request: 40.624 [ms] (mean, across all concurrent requests)

Transfer rate: 169.85 [Kbytes / sec] received

Connection Times (ms)
min mean [+ /-sd] median max
Connect: 31 31 0.0 31 31
Processing: 62 152 78.7 156 281
Waiting: 31 143 89.8 156 281
Total: 93 183 78.7 187 312

/ * The percentage of each response time * /
Percentage of the requests served within a certain time (ms)
50% 187
66% 218
75% 249
80% 281
90% 312
95% 312
98% 312
99% 312
100% 312 (longest request)

-------------------------------------------------- -----------------------------

Other parameters attached other AB

Format. Ab [options] [http://] hostname [: port] / path

Parameters:
-N requests Number of requests to perform
/ / Execute the test sessions in the number of requests, the total number of requests. By default, only the implementation of a request

-C concurrency Number of multiple requests to make
/ / A number of requests generated, the number of concurrent requests. The default is one at a time.

-T timelimit Seconds to max. Wait for responses
/ / Test for the maximum number of seconds. The implied value of the internal-n 50000. It can test the server is limited to a fixed total time or less. By default, no time limit.

-P postfile File containing data to POST
/ / POST data contains the necessary files.

-T content-type Content-type header for POSTing
/ / POST data using the Content-type header.

-V verbosity How much troubleshooting info to print
/ / Set the display level of detail - 4 or greater header information is displayed, you can display the value of 3 or greater response code (404, 200, etc.), two or more values ​​to display warnings and other information. -V Display version number and exit.

-W Print out results in HTML tables
/ / To HTML table format output. By default, it is the white background of the two widths of a table.

-I Use HEAD instead of GET
/ / Perform HEAD requests 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)
/ /-C cookie-name = value attached to the request a Cookie: line. The typical form of a parameter name = value pair. This parameter can be repeated.

-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.
/ /-P proxy-auth-username: password for a transfer agent for BASIC authentication trust. By a user name and password: separated, and sent with base64 encoding. Regardless of whether the server (ie, whether to send a certified demand code 401), this string will be sent.

-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
-H Display usage information (this message)
/ /-Attributes set attribute string defects in a variety of programs statically declared buffers of fixed length.

Many parameters, usually we use the-c and-n parameters on it.
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