Apache AB command

Apache AB command
I. Introduction AB is a stress testing tool provided by apache. AB is very practical. It can not only perform Website access stress tests on apache servers, but also perform stress tests on other types of servers. For example, nginx, tomcat, and IIS. Ii. Syntax

Usage: ab [options] [http[s]://]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)    -Z ciphersuite  Specify SSL/TLS cipher suite (See openssl ciphers)    -f protocol     Specify SSL/TLS protocol (SSL2, SSL3, TLS1, or ALL)