From: Robert Klemme <shortcutter@...>
Date: 2007-10-24T17:34:11+09:00
Subject: Re: Scattered I/O (on MS Windows)

2007/10/23, Daniel Berger <djberg96@gmail.com>:
> Hi all,
>
> Park Heesob and I came up with a custom implementation for
> IO.readlines using scattered I/O I thought would be fun to share. I
> think I'm seeing a 2x performance increase, but page caching is making
> it difficult to tell. Also, it looks like the main profiling issue is
> the call to 'split' at the end, so you can remove that last bit of
> logic if you want to see the speed without it.
>
> What do folks think? Are you seeing a performance increase? You
> probably won't see any noticeable difference unless the file is
> greater than 25mb or so, btw.

Can't test it at the moment.  But I wonder how a scattered read can
help with #readlines which reads a file sequentially.  AFAIK scattered
reading is for reading different portions of the same file.

Kind regards

robert