Archive for 九月 3rd, 2010

压力测试 Apache ab


03 9月
今天看Drupal的东东的时候看到ab的用法,记录一下: Usage: ab [options] [http://]hostname[:port]/path Options 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 -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) 顺手很小规模的测了下drupal的并发(-c 100 -n 500),结果: Percentage of the requests served within a certain time (ms) 50%  31376 66%  33323 75%  35598 80%  37157 90%  39325 95%  43371 98%  46340 99%  47633 100%  52341 (longest request) 不过是什么缓存之类的都没用的情况下,嗯,事实告诉我们,缓存什么的还是很有用的。可以想象如果-c 50000的话。。。 另外看到一个叫webbench的,貌似听说比ab好用,记录下,以后有机会试试。

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