[9fans] MTR-LS scheduling, Plan 9, and the Eclipse Operating System?

[9fans] MTR-LS scheduling, Plan 9, and the Eclipse Operating System?

[Dan Cross]

In 1998, John Bruno et al published a scheduling technique featuring
quality-of-service guarantees suitable for multimedia applications
called, "Move-To-Rear List Scheduling" (MTR-LS)
(https://www.usenix.org/legacy/publications/library/proceedings/usenix98/full_papers/bruno/bruno_html/).

This was implemented in the Eclipse operating system, which was
implemented on top of Plan 9 2e (a later system, Eclipse/BSD, based on
FreeBSD, was published that implemented a new disk scheduling
algorithm).

Reported results were good, besting the priority scheduler in Plan 9
in several cases (though perhaps not all).  But no mention of this
work seems to have ever leaked into the larger plan9 ecosystem; the
Eclipse scheduler never made it into plan9, and the EDF scheduler came
along not too long after, perhaps obviating MTR-LS. John Bruno seemed
to stop publishing in 2002, and I can't find any contemporary record
of him.

Does anyone know anything about this?

        - Dan C.

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