CakePHP translations in one or multiple po files and performance

Question

Does making the i18n tool of CakePHP making its po file in single one file better than multiple files. Here I meant by performance. Personally, I prefer single one file I regarded it easier to translate the application, but I mean the performance of the application on the server.

Answer 1

I think that one file is better than multiple files, due to the performance used when opening and closing multi files is greater than opening one file regarding-less its size.