From mboxrd@z Thu Jan 1 00:00:00 1970 From: George Dunlap Subject: [PATCH 00 of 16] credit2: Scale to multiple sockets Date: Thu, 23 Dec 2010 12:38:32 +0000 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com Cc: george.dunlap@eu.citrix.com List-Id: xen-devel@lists.xenproject.org This patch series allows credit2 to scale reasonably past one socket. The to key things it introduces are: * Code to detect cpu topology, and create one runqueue per socket * A first-cut at a load-average based load balancer Quick descriptions below: 01: Make some debug messages quieter. 02-03: Clean up some of the per-cpu runqueue lock pointer code. This is the only part of the patch that touches code outside the credit2 scheduler. 04-07: Infrastructure for having multiple sockets, including hooks for load calculation 08: Detect socket layout, make one runqueue per socket 09-13: Infrastructure for load-balancing, including load averages for runqueues and sockets 14: A load-average-based balancer 15: Refinement on when to balance 16: Debug key output