3.0.1 Performance Suggestions

I'm not entirely clear on what's required in terms of server programs in order to use vBSEO 3.0.1.

To take advantage of the performance improvements offered with this version of vBSEO what version of PHP/MySQL must I have?

My PHP is version 4.4.7 and MySQL is 4.1.21-standard and so far I haven't seen any improvements in sever load. If anything it has gotten worse.
Are the Cache programs listed in the vBSEO CP now required?

memcached
APC Cache
XCache
eAccelerator

The major changes are in memory usage, rather than cpu load. I'd also update PHP to 5.2.x and MySQL to 5.0.x if I were you.

Originally Posted by Noodles

The major changes are in memory usage, rather than cpu load. I'd also update PHP to 5.2.x and MySQL to 5.0.x if I were you.

Very well, I'll be upgrading those in the morning.

PHP has been upgraded to 5.2.4 and I have one small problem. Rewrites to the forum index return a 500 server error. /forums/

However all the other rewrites (threads, forums, etc) are fine. People can post and everything, we just can't list the index. I checked htaccess and it's unchanged in the /forums/ sub directory.

Any suggestions?

Do you have any details in server's error log?

Originally Posted by Oleg Ignatiuk

Do you have any details in server's error log?

Lots of various memory errors I suspect is from mis-configuration of PHP. For instance: [Sun Oct 21 10:27:03 2007] [error] PHP Fatal error: Allowed memory size of 16777216 bytes exhausted (tried to allocate 645797 bytes) in /mypath/public_html/forums/showthread.php(1970) : eval()'d code on line 107

The other's are various 404 errors.

Please try to increase memory_limit setting in PHP configuration.

Originally Posted by Oleg Ignatiuk

Please try to increase memory_limit setting in PHP configuration.

I doubled it to 16 MB.

As I see from the error message, 16Mb limit was exceeded, try to increase it to 32M.

I updated the it to 32 MB

Did that help?

Yes that appears to has resolved it. The memory limit in the default PHP config is only 8 MB, and I raised it to 32 MB for the forum to work correctly. Thanks for the suggestions and help!

One thing I learned is that you can simply remove the PHP memory limit in vBulletin by adding the code

Code:

ini_set('memory_limit', -1);

right after the <?php in the vBulletin config.php file.

TundraSoul,

I also recently upgraded to unencrypted 3.0.1 and at the same time (well, a few days later) upgraded MySQL and PHP to the 5.x releases. You should see a performance increase from going to the unencrypted version alone (your memory usage will decrease, not necessarily your server load) and then another slight gain by the 5.x updates.

If you want to get an even further performance gain then look into installing the APC accelerator.

The combination of all three... unencrypted vBSEO, MySQL & PHP upgrades, and APC accelerator... has made for quite a performance boost on my dedicated server.

Originally Posted by KW802

... If you want to get an even further performance gain then look into installing the APC accelerator. ...

Could you explain/describe this more for those of us that don't know what that is?

Thanks,

Jim