On Wednesday, April 8, 1992 at 10:46:15 AM UTC-7, Peter da Silva wrote:

In article <1992Apr6.0...@decuac.dec.com> m...@hussar.dco.dec.com (Marcus J. "will do TCP/IP for food" Ranum) writes:

Does anyone really have any hard evidence that microkernels
are worth jack?

Well, QNX gets pretty good performance. One thing they did was make sure their
microkernel fit in the 8K on-chip cache on the 80486. Another common operating
system with a microkernel design is AmigaOS. Neither of these systems have a 4MB "microkernel". Both run on commodity processors in under 512K, in fact. Don't extrapolate from some bad implementations of the idea to the conclusion that the idea doesn't work.
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Did it work??

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