North American Network Operators Group|
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RE: Followup British Telecom outage reason
You'll forgive me for being cynical here, but I seriously doubt that any Linux-derived operating systems could truly qualify as 'real-time'. To meet the requirements for an RTOS, Linux would have to be so heavily mutated that it would no longer be Linux. Cheers Chuck -----Original Message----- From: Patrick Greenwell To: Christian Kuhtz Cc: Alex Bligh; Paul Vixie; [email protected] Sent: 29/11/01 07:49 Subject: RE: Followup British Telecom outage reason 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.