[44481] in North American Network Operators' Group
RE: Followup British Telecom outage reason
daemon@ATHENA.MIT.EDU (Patrick Greenwell)
Thu Nov 29 01:50:31 2001
Date: Wed, 28 Nov 2001 22:49:43 -0800 (PST)
From: Patrick Greenwell <patrick@cybernothing.org>
To: Christian Kuhtz <christian@kuhtz.com>
Cc: Alex Bligh <alex@alex.org.uk>, Paul Vixie <vixie@vix.com>,
<nanog@merit.edu>
In-Reply-To: <NJEGKKENPOCEEBFPGGCMGECPCDAA.christian@kuhtz.com>
Message-ID: <20011128224745.M61098-100000@unagi.cybernothing.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Errors-To: owner-nanog-outgoing@merit.edu
On Wed, 28 Nov 2001, Christian Kuhtz wrote:
>
> > I guess some time someone will realize routers are both
> > hardware, and software, and shock horror both, if done
> > well, can actually add value. [hint & example: compare the
> > scheduler on, say, Linux/FreeBSD, Windows 95 (sic),
> > and your favourite router OS (*); pay particular attention
> > to suitability for running realtime, or near realtime tasks,
> > where such tasks may occasionally crash or overrun their
> > expected timeslice; note how the best OS amongst the
> > bunch for this aint exactly great].
> >
> > (*) results may vary according to personal choice here.
>
> Don't use a non-realtime OS for something that you expect realtime or
> near-realtime OS functionality. There are specific systems to address these
> kinds of needs with rather complicated scheduling mechanism to accomodate
> such requirements in a sensible manner.
>
> Is IOS a realtime operating system? No. Are any of the other listed OS
> realtime operating systems? No.
Actually there are multiple Linux-based RTOSes.
