Subject: Re: [PATCH 2.6.15] Adding kernel-level identd dispatcher
From: Trond Myklebust <trond.myklebust@fys.uio.no>
To: Edward Chernenko <edwardspec@yahoo.com>
Cc: linux-kernel@vger.kernel.org, edwardspec@gmail.com
In-Reply-To: <20060328154841.74612.qmail@web37708.mail.mud.yahoo.com>
References: <20060328154841.74612.qmail@web37708.mail.mud.yahoo.com>
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Date: Tue, 28 Mar 2006 10:53:27 -0500
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On Tue, 2006-03-28 at 07:48 -0800, Edward Chernenko wrote:
> 
> --- Trond Myklebust <trond.myklebust@fys.uio.no>
> wrote:
> 
> > Most servers are designed for low latency. A lot of
> > them sleep a lot,
> > and a fair number of them also go poking around the
> > kernel variables
> > in /proc (which exists precisely in order to export
> > internal kernel
> > variables to userspace programs). I'll bet even your
> > average Oracle
> > database application fits those criteria.
> > 
> > Echo made sense to move into the kernel because in
> > addition to the above
> > it is a required feature on all Internet hosts, is
> > pretty much stateless
> > (and/or depends only on internal IP stack state),
> > and needs extra low
> > latency because it is designed to be used for timing
> > purposes by
> > clients.
> > The same criteria hardly apply to identd.
> 
> If so, then why khttpd _was_ included into kernel?

That has been widely acknowledged as a mistake. You'll note that khttpd
was removed prior to the release of linux-2.6.0. Nobody misses it.

Cheers,
  Trond

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