Reference Guide

Zend Server Reference Manual
Inconsistent Output Size
Description: When a specific PHP request’s output size deviates from the average by the percentage
specified (measured per URL) it generates an event. The “Inconsistent Output Size” Rule contains the
output size’s deviation percentage (i.e. the amount of output the request has to generate in order to
trigger an event).
Information Collected:
The output size in the Group Details helps to analyze the nature of the event. For example if the output
size is 0 you can determine that nothing was outputted and try to understand why.
Generally, PHP errors and Function errors are generated at the same time as the Inconsistent Output
Size error, which can provide further information.
Applicable Diagnostic Actions:
Click on a link to see how to perform each action tools are listed in order of relevance to helping solve the
event:
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Run the Debugger
View information in the Logs
Open code in editor
Run the Profiler
Possible Causes and Solutions:
Small Output Sizes - It is important to look at the results that show a smaller output size to help identify
why this output was so large. This usually indicates that the requested output was not fully generated.
Possible Solution - Look for related PHP errors and Function Errors and then view the PHP and Web
server logs for further details.