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Subjectmulti-queue scheduler update
I just posted an updated version of the multi-queue scheduler
for the 2.4.0 kernel. This version also contains support for
realtime tasks. The patch can be found at:

http://lse.sourceforge.net/scheduling/

Here are some very preliminary numbers from sched_test_yield
(which was previously posted to this (lse-tech) list by Bill
Hartner). Tests were run on a system with 8 700 MHz Pentium
III processors.

microseconds/yield
# threads 2.2.16-22 2.4 2.4-multi-queue
------------ --------- -------- ---------------
16 18.740 4.603 1.455
32 17.702 5.134 1.456
64 23.300 5.586 1.466
128 47.273 18.812 1.480
256 105.701 71.147 1.517
512 FRC 143.500 1.661
1024 FRC 196.425 6.166
2048 FRC FRC 23.291
4096 FRC FRC 47.117

*FRC = failed to reach confidence level

--
Mike Kravetz mkravetz@sequent.com
IBM Linux Technology Center
15450 SW Koll Parkway
Beaverton, OR 97006-6063 (503)578-3494
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