DNS local cache Performance stress test

Source: Internet
Author: User


1, open NSCD, through the UNIX socket get parse, 100,000 times parsing 5 seconds.

2, open NSCD, through the memory cache directly to get the resolution, 100,000 times parsing 0.06 seconds

3, using DNSMASQ, through the UDP get parsing, 100,000 parsing 5 seconds, and through the UNIX socket mode NSCD performance flat.

4, no cache, 100,000 resolution requests, in the distant ... (Catch the packet found that there is a noticeable lag)

Test method:

<?php$start = Microtime (True); for ($i =0; $i <100000; $i + +) {gethostbyname (' www.qq.com ');} $end = Microtime (True); Echo ($end-$start). Php_eol;

DNS local cache Performance stress test

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