Reference Guide

Zend Server Reference Manual
Fine Tuning Optimizer+
The performance improvement gained by letting the Optimizer+ run out-of-the-box can be further
enhanced with fine-tuning. These are advanced settings that need to be evaluated based on your
environments usage specifications and performance requirements.
Note:
These are only recommendations, in most cases, such fine-tuning should not be necessary.
Disabling Code Change Auto-Detection
In the Administration Interface, to view the specific directives for Optimizer+, go to Server Setup |
Components and click on the Directives link next to the Optimizer+.
Look for "zend_optimizerplus.validate_timestamps" and set the value to Off.
This speeds up the server, but also requires that you restart the server ( ) if you
deploy new versions of existing files.
When to change: If your PHP code is rarely updated/changed or if you are capable of manually restarting
your PHP on every code update.
When not to change: If you are in development and you are frequently changing code, or if you do not
have control over the code update process.
Decreasing Code Validation Frequency
In the Administration Interface, to view the specific directives for Optimizer+, go to Server Setup |
Components and click the Directives link next to the Optimizer+.
Look for "zend_optimizerplus.revalidate_freq" and set the value to 30 (seconds).Zend Server is now
set to check PHP file changes every 30 seconds.
When to change: If you do not change PHP files often and some delay between file update and site
update is acceptable, you may set it even higher.
When not to change: If you have frequently changing files and you need the changes to take effect
immediately.
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