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How did you solve searching in large forums? · **Released**: 06-21-2006

We are experiencing server performance when a user searches through our fairly large forum. The fulltext search aparently locks thread and post tables causing Apache processes to wait until the search is done. This in turn causes a surge of new Apache connections to open. If the search takes too long everyone experiences a downtime of the forum while the search is done.

What is the solution to this? How did you solve it?

The only thing I can think of right now is to install another instance of mysql on this same server and configure it as slave with replication. This instance would have its own database files and a different port.

Then configure vBulletin to use the slaveserver for the search script.

However I notice that vBulletin (in 3.5.3, function db->connect) checks to see if the master and slave have different names. This will not work if both of them are set to localhost even if they are using different ports. So at least a hack will have to be done here.

kmike · #42 10-03-2006, 08:00 AM

You may want to read this document:
http://dev.mysql.com/doc/refman/4.1/...n-options.html
search for "--replicate-do-table".
Some additional reading: http://dev.mysql.com/doc/refman/4.1/...ion-rules.html

ubuntu-geek · #43 10-03-2006, 09:59 AM

<a href="https://vborg.vbsupport.ru/showthread.php?t=127868" target="_blank">https://vborg.vbsupport.ru/showthread.php?t=127868</a> amazing speed..

TECK · #44 10-03-2006, 02:35 PM

Thanks guys, I will definitelly try Sphinx.

Erwin · #45 10-17-2006, 04:36 AM

One day I need to find time to do more How-Tos... I'm just way too busy with life...

kontrabass · #46 11-07-2006, 02:37 PM

Quote:

Originally Posted by ubuntu-geek

https://vborg.vbsupport.ru/showthread.php?t=127868 amazing speed..

Is Sphinx really the miracle it seems to be? Any other big-boarders solved their search issues with Sphinx?

mute · #47 11-10-2006, 12:45 PM

Quote:

Originally Posted by kontrabass

Is Sphinx really the miracle it seems to be? Any other big-boarders solved their search issues with Sphinx?

We're the uh, 4th? Largest vb forum I think, and I believe the first to switch to Sphinx. It solved our search woes 100%, and we're very happy with it.

kmike · #48 11-13-2006, 01:47 PM

We've been running Sphinx-based search since May. It was a miracle indeed, after an usability nightmare of searching in split-per-year archives of our 6+ mln posts.

amcd · #49 11-16-2006, 03:39 PM

Quote:

Originally Posted by kontrabass

Is Sphinx really the miracle it seems to be? Any other big-boarders solved their search issues with Sphinx?

sphinx search is the best hack i have ever seen. with plugins in vb 3.5.x and 3.6.x, there is a tendency to avoid code edits, but this one is worth it.

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