From: Roger Pack <redmine@...>
Date: 2010-05-01T05:26:26+09:00
Subject: [ruby-core:29906] [Bug #3228] speedup File.read

Bug #3228: speedup File.read
http://redmine.ruby-lang.org/issues/show/3228

Author: Roger Pack
Status: Open, Priority: Normal
ruby -v: ruby 1.9.2dev (2010-05-01 trunk 27570) [i686-linux]

Appears from http://www.ruby-forum.com/topic/209005
that File.read could be sped up by first requesting the file's size, then reading that much.

File.read('a', File.size('a')) # faster than just File.read('a') by about 15% in Linux/Windows

in windows, it also speeds up ascii reading dramatically, which was unexpected, but nice.
Cheers!
-rp


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