PHP APC Performance Improvement

Submitted by Kevin Ohashi on Sun, 09/02/2012 - 09:23

Posted in

Programming

I installed PHP APC today was simply shocked by some of the performance gains I was getting by it.

I had a problematic page that was calculating a lot of info (the same info) every time it loaded. Those were costly calculations.

APC gave me about 80ms faster load off the bat. But the performance was REALLY noticeable after a lot of users were hitting the site. (I used Blitz.io to do load testing)

It went from 2.5 second response time with 260 users to 400ms with 260 users. Without APC I had a 600ms load time with only 81 users.

The graphs below really speak for themselves.

TL;DR: caching = win.

No Caching Graph:
no apc

With Caching (APC)
with apc

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Hey there! My name is Kevin Ohashi. I am the founder of Review Signal which currently does web hosting reviews.

I like to blog about startups, business, economics, marketing, programming and domain names. My current passion is analyzing data and finding patterns and insights hidden in data that nobody else realizes is there!

I am also working on a Gift Discovery/Gift Inspiration website called Gift Lizard that let's you find gift suggestions by describing the person you're trying to buy for.

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