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Simon Holywell:
HHVM vs Zephir vs PHP The showdown
March 03, 2014 @ 12:38:14

Simon Holywell has posted what he calls a "showdown" between HHVM, Zephir and PHP comparing various benchmarks (based on a Mandelbrot Set fractal).

Since its inception the slow running speed of PHP has been widely publicised and over the years there have been a number of improvements. [...] It has become more interesting recently however with three projects looking for improvements in different ways. The core has adopted the Zend OPcache for future versions of PHP, Facebook has been working on a just in time compiler called HipHop VM and the team that brought us Phalcon framework have created Zephir.

All of these projects have chosen to tackle the issue of PHP's speed via different avenues. It has therefore left one simple question - who's making the biggest improvements? Who's the fastest?

He briefly introduces the "contenders" for those not familiar with them and gets right into the benchmarking process. He shares the link to the tests he used and a few notes about the HHVM setup that could account for lower numbers. He shares his results in a few graphs or you can grab the CSV data yourself and parse it. The entire setup is also over on GitHub if you'd like to just check that out.

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Link: http://simonholywell.com/post/2014/02/hhvm-vs-zephir-vs-php-the-showdown.html

Davey Shafik:
Everything You Need to Know About OpCode Caches
October 01, 2013 @ 10:49:48

Davey Shafik has a new post to his site today sharing everything you need to know about opcode caches, the mechanism that's works "behind the scenes" to cache the execution of the opcode paths for later reuse.

Last year I wrote a talk called "Fast, Not Furious: How to Find and Fix Slow Code" - a performance talk covering profiling, memcache and some other stuff. As I often do - to hedge my bets = I stuck a few slides on the end "just in case" I ran through everything too quickly and needed to fill in time. These slides were on APC, the Alternative PHP Cache, and went just a little into tokens and how APC works under the hood. I really enjoyed presenting those 6 slides, and I've been wanting to expand on that topic ever since then. Well, after a few weeks of hard work, some input from some great people, including Sara Golemon, Elizabeth Smith and Julien Pauli, I'm so very happy to publish PHP Performance I: Everything You Need to Know About OpCode Caches.

The result is published over on the Engine Yard Developer Center and has been made into a 20 minute screencast (with original slides here). He covers what they are, which ones are out there, the common execution cycle and what happens when the opcodes are cached.

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opcode cache presentation screencast guide tutorial apc zend opcache

Link: http://daveyshafik.com/archives/68838-everything-you-need-to-know-about-opcode-caches.html


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