From: Erich Focht <efocht@ess.nec.de>
To: linux-ia64@vger.kernel.org
Subject: [Linux-ia64] O(1) scheduler K3: new IA64 patch
Date: Wed, 20 Feb 2002 18:35:10 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590701905153@msgid-missing> (raw)
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Hi!
Please find attached an updated version of the IA64 version of
Ingo's O(1) scheduler patch. The changes to the previous version are:
- the context wrap around problem is now solved without locks (thanks to
David Mosberger for the suggestion),
- set_cpus_allowed() should do what it is expected to: set the
cpus_allowed mask of an arbitrary process and move it to a new CPU if
needed.
- should compile an UP kernel cleanly (Mike Madore's hint).
There were reports that the IDLE_REBALANCE_TICK value is too small for
machines with more than 16 CPUs where all the idle cpus trying to
load_balance() slow down the booting CPU considerably. Maybe 10ms would be
more appropriate in this case...
Best regards,
Erich
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