Bug #54212 [NEW]: Localhost resolves much more slowly than 127.0.0.1 on mysql_connect()
From: kriscraig
Operating system: Windows
PHP version: 5.3.5
Package: MySQL related
Bug Type: Bug
Bug description:Localhost resolves much more slowly than 127.0.0.1 on mysql_connect()
Description:
------------
I'm told that a number of people have been reporting this issue. The
reports I'm hearing state that people are finding it to be about 3-4 times
slower when done by hostname.
My guess would be this is another IPv6-related issue. It's also worth
noting that I have not yet been able to independently verify these numbers,
though I am working on doing so and will post the data if/when I have it.
It was requested that I post this bug so that we have a record of it. If
you've experienced any hostname vs. IP performance issues (good or bad),
please post a comment here so we have the reports in one central place.
Thanks!
Test script:
---------------
<?php
if ( !isset( $_GET["host"] ) )
{
die( "You must specify ?host= in the URL string. Example:
mysql_connect_test.php?host=localhost" );
}
$start = microtime( TRUE );
$link = mysql_connect( $_GET["host"], "root", "(your-password-here)" )
or
die( "Function mysql_connect() failed." );
$end = microtime( TRUE );
$duration = $end - $start;
print "<b>Execution Time:</b> $duration sec<br />\r\n";
--
Edit bug report at http://bugs.php.net/bug.php?id=54212&edit=1
--
Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=54212&r=trysnapshot52
Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=54212&r=trysnapshot53
Try a snapshot (trunk): http://bugs.php.net/fix.php?id=54212&r=trysnapshottrunk
Fixed in SVN: http://bugs.php.net/fix.php?id=54212&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=54212&r=needdocs
Fixed in release: http://bugs.php.net/fix.php?id=54212&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=54212&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=54212&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=54212&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=54212&r=support
Expected behavior: http://bugs.php.net/fix.php?id=54212&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=54212&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=54212&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=54212&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=54212&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=54212&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=54212&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=54212&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=54212&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=54212&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=54212&r=mysqlcfg
Thread (7 messages)
- kriscraig@php.net