Разработка начата в 1975г... ;-)nanokernel, полностью
функциональное при 100Kб памяти.
"The following papers provide a general overview of the
KeyKOS system. If you are interested in learning about
KeyKOS, my recommendation is to read all of these papers
in the order listed:
The KeyKOS Architecture
(1985)
Provides an extremely dense and precise description of
the KeyKOS architecture. This is, in most respects,
the definitive description of the architecture. This
paper is also available in postscript form.
The Checkpoint Mechanism in
KeyKOS (1992)
Provides a detailed description of the checkpoint
mechanism in KeyKOS and it's implementation. The
KeyKOS checkpoint mechanism imposes less than 0.8%
overhead. The techniques make interesting reading.
The KeyKOS
NanoKernel Architecture (1992)
The most recent attempt to provide an architectural
overview, this one intended for readers who are coming
from the UNIX perspective. In addition, this paper
provides an overview of KeyNIX, the prototype UNIX
implementation that runs on top of KeyKOS. This paper
is also available in
postscript
form.
Object Oriented
Transaction Processing in the KeyKOS Microkernel
(1993)
Describes the KeyKOS transaction processing facility.
Among other things, this paper presents a clear
example of how the journaling facility is used, and
represents an interesting cut on dividing up the
functionality of a database system.