memory_limit default

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