sphinx和mysql like对比

一共有3093326条企业数据，其中sphinx代码如下:

<?php
function microtime_float()
{
    list($usec, $sec) = explode(" ", microtime());
    return ((float)$usec + (float)$sec);
}
$time_start = microtime_float();
$s = new SphinxClient;
$s->setServer("localhost", 9312);
$s->setMatchMode(SPH_MATCH_ANY);
$s->setMaxQueryTime(300);

$result = $s->query("暖气片",'test1');
var_dump($result);
$time_end = microtime_float();
$time = $time_end - $time_start;
echo "Sphinx search in $time seconds
";
?>

php+mysql代码如下：

<?php
$start = microtime_float();
mysql_connect("localhost", "root", "root") or
    die("Could not connect: " . mysql_error());
mysql_select_db("test");

$result = mysql_query("SELECT id, cache_companyname as title, content FROM pb_trades where cache_companyname like '%暖气片%' or content like '%暖气片%' limit 10");
echo mysql_num_rows($result);
$end = microtime_float();
$time = $end - $start;
echo "Mysql like search in $time seconds
";
mysql_free_result($result);
?>

都是搜索带有“暖气片”的关键词，Sphin花费0.17000985145569 seconds，Mysql花费了19.646124124527 seconds.