XF 1.4 66% slower server response times after upgrading to 1.4.8

[DeltaHF]

After upgrading to 1.4.8 (from 1.4.7), I noticed a sharp increase in XenForo's application response times according to NewRelic. As you can see in these graphs, most pages were generated on the server in approximately 30ms; after the update, that has changed to 50ms - an increase of nearly 66%.

Note that I performed the upgrade at approximately 12:00AM on June 27th. There were no other changes or upgrades performed at this time. This is a dedicated CentOS server running @eva2000's Centminmod. PHP-FPM 5.4.42, MariaDB 5.5.44.

Any ideas on what might have caused this?

 

[Mike]

There's only one thing that changed in 1.4.8 that is globally involved and it was a missing trophy check, though the check should only run on session creation (like promotions). Do you have a large number of trophies?

 

[DeltaHF]

No, I'm actually not using the trophy system at all.

I'm not running many add-ons but I'll go through them to see if one isn't happy with 1.4.8.

 

[DeltaHF]

Yeah, no improvement after disabling non-essential add-ons (I left the official add-ons enabled - Media Gallery, Enhanced Search, and the Resource Manager).

Has anyone else running NewRelic noticed a similar change, or am I alone in this?

 

[eva2000]

why not update to PHP 5.6.10 and benefit for performance gains that would offset the change you see from 1.4.7 to 1.4.8 ?

 

[DeltaHF]

Great suggestion, @eva2000.

Just updated to 5.6.10 from 5.4.42 and response times have dropped back down to pre-XenForo 1.4.8 levels.



(Ignore the gap in the graph - it took me a while to get NewRelic reconfigured after the upgrade.)

 

[rdn]

MariaDB 5.5.44

And also, why not upgrade to MariaDB 10.0.20?

 

[rdn]

To save that /css.php resource hog request, Try BD Cache addon of @xfrocks.