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From: Rich Felker <dalias@aerifal.cx>
Newsgroups: gmane.linux.lib.musl.general
Subject: Re: Anti-bloat side project
Date: Tue, 16 Aug 2011 09:06:43 -0400
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On Tue, Aug 16, 2011 at 03:03:50PM +0200, Moritz Wilhelmy wrote:
> Hello,
> 
> While debugging mlmmj, my mailing list manager of choice, I noted that
> it calls read(2) really, really often, in order to read a single byte
> out of a fd, and then read the next byte, like this:
> 
> open("/var/spool/mlmmj/foo/control/listaddress", O_RDONLY) = 4
> read(4, "f", 1)                         = 1
> read(4, "o", 1)                         = 1
> read(4, "o", 1)                         = 1
> read(4, "@", 1)                         = 1

Is it possibly implemented as a shell script? The way the shell "read"
command works, it's required to perform byte-at-a-time reads like
this. Otherwise, I'm guessing someone just foolishly turned off
buffering on the FILE...

Rich