ubuntu下apache ab命令简单压力测试

Usage: ab [options] [http[s]://]hostname[:port]/path 
Options are: 
 
//总的请求数  
-n requests Number of requests to perform宅  
 
//一次同时并发的请求数 总的请求数(n)=次数*一次并发数(c)  
-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)