使ApacheBench支持multi-url

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由于标准的ab只支持对单个uri进行压测，不满足实际需要，故做以下修改，使ab支持multi-url。

1、下载apache httpd相关源码包以及针对ab工具的patch包

wget https://mirrors.tuna.tsinghua.edu.cn/apache/apr/apr-1.6.5.tar.gz
wget https://mirrors.tuna.tsinghua.edu.cn/apache/apr/apr-util-1.6.1.tar.gz
wget https://mirrors.tuna.tsinghua.edu.cn/apache/httpd/httpd-2.4.37.tar.gz
wget https://github.com/philipgloyne/apachebench-for-multi-url/archive/master.zip

注：httpd依赖于apr和apr-util

2、编译安装apr

tar -zxf apr-1.6.5.tar.gz
cd apr-1.6.5
./configure --prefix=/usr/local/apr
make && make  install

3、编译安装apr-util

tar -zxf apr-util-1.6.1.tar.gz
cd apr-util-1.6.1
./configure --prefix=/usr/local/apr-util --with-apr=/usr/local/apr
make && make install

4、替换httpd源码里面的ab.c文件

unzip master.zip
tar -zxf httpd-2.4.37.tar.gz
\cp ./apachebench-for-multi-url-master/ab.c ./httpd-2.4.37/support/

5、编译安装httpd

cd httpd-2.4.37
./configure                             \
    --with-apr=/usr/local/apr           \
    --with-apr-util=/usr/local/apr-util \
    --prefix=/usr/local/apache          \
    --sysconfdir=/etc/httpd24           \
    --enable-so                         \
    --enable-ssl                        \
    --enable-cgi                        \
    --enable-rewrite                    \
    --with-zlib                         \
    --with-pcre                         \
    --with-mpm=prefork                  \
    --enable-modules=most               \
    --enable-mpms-shared=all  

make && make install

6、验证结果

#/usr/local/apache/bin/ab -h
usage: /usr/local/apache/bin/ab [options] [http[s]://]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
    -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)
    -l              use url list file name, eg. url.txt
    -z ciphersuite  specify ssl/tls cipher suite (see openssl ciphers)
    -f protocol     specify ssl/tls protocol (ssl2, ssl3, tls1, or all)

可以看到ab已经支持-l参数（上面帮助信息的倒数第3行），大功告成。