Fix for PHP S2I Opcache configuration

[lucasnetau]

Fixes #150 and #149

[rhscl-bot]

Can one of the admins verify this patch?

[centos-ci]

Can one of the admins verify this patch?

[andrewklau]

@hhorak @bparees fyi

[caruccio]

+1

[bparees]

lgtm, thanks @lucasnetau

[omron93]

Please run tests, before merging. Tests are failing for 7.0, so image is not built.

Fatal Error Zend OPcache cannot allocate buffer for interned strings

@lucasnetau @bparees @andrewklau @remicollet How to fix it?

[remicollet]

opcache.memory_consumption is obviously to small

$ php -d opcache.enable_cli=1 -d opcache.memory_consumption=16 -d opcache.interned_strings_buffer=8 -v
Thu Mar 16 11:08:39 2017 (20578): Fatal Error Zend OPcache cannot allocate buffer for interned strings

$ php -d opcache.enable_cli=1 -d opcache.memory_consumption=24 -d opcache.interned_strings_buffer=8 -v
PHP 7.0.17 (cli) (built: Mar 14 2017 14:39:53) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies
    with Zend OPcache v7.0.17, Copyright (c) 1999-2017, by Zend Technologies

[lucasnetau]

@omron93 Please see #152 which explains the issue. This patch corrected the installation of the opcache profile, I left the defaults as set in the original file.

Unfortunately in all my environments I have OPCACHE_MEMORY_CONSUMPTION to values greater than 16 so did not pick up on the issue until after the pull request was merged.

Setting OPCACHE_MEMORY_CONSUMPTION=18 or higher will allow the container to run. I've posed a question to the maintainers as to what a sensible default should be.

[omron93]

@lucasnetau @remicollet Thanks for help and quick fix.

[bparees]

@remicollet sorry, I saw green and thought it meant the tests had run, didn't notice that the bot was asking for admin approval before running tests.