From: matz@... (Yukihiro Matsumoto)
Date: 2002-06-21T17:13:40+09:00
Subject: Re: Why is I/O slow?

Hi,

In message "Re: Why is I/O slow?"
    on 02/06/21, Clifford Heath <cjh_nospam@managesoft.com> writes:

|> It's due to stdio buffering.
|
|But our tests on Linux with fread and glibc indicate that there is no
|extra buffering happening. stdio is *capable* of buffering, but in this
|case it isn't *actually* buffering (it's not possible to move A->B->C
|as fast as A->C, from my argument about bandwidth). stdio libraries that
|still do double copies must surely be rare now...?

"stdio" just doesn't provide the way to distinguish buffered and
unbuffered input.  And glibc does not exist everywhere.  So I have to
do the job by myself, if I want to tweak the buffer.  And I want to.

							matz.