Linux下使用queryperf进行DNS服务器性能测试

一、queryperf介绍

queryperf是bind中一款自带的压力测试软件，这里使用这款软件可以对DNS服务器做请求测试，通过使用queryperf测试多次取平均值得到DNS服务器的性能。

二、queryperf的安装

wget官网下载即可：

wget https://www.isc.org/downloads/file/bind-9-11-5/?version=tar-gz -O bind-9-11-5.tar.gz

包解压安装：

tar -xf bind-9-11-5.tar.gz

进入queryperf目录进行编译安装

cd ./bind-9.11.5/contrib/queryperf && sh configure && make

编译安装完成移动可执行文件到/usr/bin/

cp -a queryperf /usr/bin/

三、queryperf的使用

使用格式：

Usage: queryperf [-d datafile] [-s server_addr] [-p port] [-q num_queries]
                 [-b bufsize] [-t timeout] [-n] [-l limit] [-f family] [-1]
                 [-i interval] [-r arraysize] [-u unit] [-H histfile]
                 [-T qps] [-e] [-D] [-R] [-c] [-v] [-h]
  -d specifies the input data file (default: stdin)
  -s sets the server to query (default: 127.0.0.1)
  -p sets the port on which to query the server (default: 53)
  -q specifies the maximum number of queries outstanding (default: 20)
  -t specifies the timeout for query completion in seconds (default: 5)
  -n causes configuration changes to be ignored
  -l specifies how a limit for how long to run tests in seconds (no default)
  -1 run through input only once (default: multiple iff limit given)
  -b set input/output buffer size in kilobytes (default: 32 k)
  -i specifies interval of intermediate outputs in seconds (default: 0=none)
  -f specify address family of DNS transport, inet or inet6 (default: any)
  -r set RTT statistics array size (default: 50000)
  -u set RTT statistics time unit in usec (default: 100)
  -H specifies RTT histogram data file (default: none)
  -T specify the target qps (default: 0=unspecified)
  -e enable EDNS 0
  -D set the DNSSEC OK bit (implies EDNS)
  -R disable recursion
  -c print the number of packets with each rcode
  -v verbose: report the RCODE of each response on stdout
  -h print this usage

常用：queryperf [-d datafile] [-s server_addr] [-p port] [-q num_queries]

-d: 后面接文件，文件的内容是用户对DNS的请求，一行为一条请求，为了达到性能测试要求我们可以在里面不断往上增加条数，直至观察到瓶颈。
-s: DNS服务器地址
-p: DNS服务器端口
-q: 请求多少次