Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:74920
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Message-ID: <AE.29.12705.12ADE935@pb1.pair.com>
To: internals@lists.php.net
Date: Mon, 16 Jun 2014 13:50:51 +0200
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Content-Transfer-Encoding: 7bit
Subject: memory_limit default
From: pascal.chevrel@free.fr (Pascal Chevrel)

Hi internals people,

I was curious to know why the memory limit in php.ini was set to 128MB 
so I digged into the repository history and I saw that it was bumped 
from 16MB to that value in 2006: 
https://github.com/php/php-src/commit/3ffc1c8f4a1e4c1658f94038e009e226258a65a4#diff-299b21e0851494929e62b81e8d91b5b3

Since there is no reference to a bug in the commit and I couldn't find 
anything about it on the net, I thought I would ask at the source in 
internals.

Was it changed because the defaut value was too low for PHP to work 
correctly? Or was the change done to reflect the state of hosting 
solutions back then? I am curious to know why 128 and not 64 or 256 
actually. If this is the result of an analysis of the state of hosting, 
I am also wondering if 8 years later php.ini settings that depend on 
hardware like memory are still the right defaults.

Thanks for your hindsight on this!

Pascal