Re: phpng: Refactored PHP Engine with Big Performance Improvement

On 5/8/14, 5:48 AM, Zeev Suraski wrote: > Again, this is just history/habits. > Nothing prevents creation of apache-fastcgi-php5 package that'll do the > exact same thing using FastCGI. What you are calling history/habits here is also knows as operational stability. Every change to a stack incurs operational costs which has to be balanced against the benefits of changing a component. Even though it seems like a trivial thing to change from Apache/mod_php to Apache/mod_fcgid or nginx+php-fpm, the operational cost can be quite high. Consider changes to the Nagios monitoring setup. Dev VM images all have to be updated. Startup/shutdown/deploy and logging systems might be affected along with integration tests. And for most environments changing doesn't actually buy you anything. A typical PHP request spends so little time in the web server compared to waiting on mysql and memcache replies that even a major performance boost doesn't actually give you much. I fully agree that nginx+php-fpm is a nicer architecture. I like the process separation that fastcgi brings and the saner and richer configuration nginx brings along with the slight performance boost, but even for my own use those benefits haven't outweighed the cost of switching for me for systems that are running well under mod_php today. -Rasmus

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