From: George Dunlap <george.dunlap@eu.citrix.com>
To: xen-devel@lists.xensource.com
Cc: george.dunlap@eu.citrix.com
Subject: [PATCH 0 of 2] credit2: Reduce excessive cpu migration
Date: Thu, 9 Dec 2010 17:55:15 +0000 [thread overview]
Message-ID: <patchbomb.1291917315@gdunlap-desktop> (raw)
More recent processors have one L2 per core. My plan for the credit2
scheduler invovled having several cores sharing the same runqueue.
I've measured the cost of excessive cross-L2 intra-L3 migrations, and while
they're not excessive, they are measurable. This patch series introduces
some simple heuristics to reduce unnecessary migration.
As in all the Credit2 work, this is a first cut, and I'm sure there are
further improvments.
next reply other threads:[~2010-12-09 17:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-09 17:55 George Dunlap [this message]
2010-12-09 17:55 ` [PATCH 1 of 2] credit2: Don't migrate cpus unnecessarily George Dunlap
2010-12-09 17:55 ` [PATCH 2 of 2] credit2: Implement cross-L2 migration "resistance" George Dunlap
2010-12-09 18:03 ` [PATCH 0 of 2] credit2: Reduce excessive cpu migration George Dunlap
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