From: Allen Mitchell <ajm@...>
Date: 2002-10-08T01:26:27+09:00
Subject: File.read Vs. File.sysread performance...

I tried the following piece of code on W2000 using a 2.4MB file

s = Time.new
data = File.open("xx.data","rb").read
e = Time.new
p e-s

Time to perform 6.5 seconds
Then I changed it to

s = Time.new
data = File.open("xx.data","rb").sysread( File::stat("xx.data").size )
e = Time.new
p e-s

Time to perform .01 seconds....... THATS RIGHT .01 seconds

This was using a stable snapshot from about a month ago. And yes, I know
that sysread is a low level function, but I never expected an improvement of
650X.

Any thoughts?

Allen Mitchell