From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ingo Molnar Date: Fri, 20 Aug 2004 08:06:21 +0000 Subject: Re: [PATCH] add scheduler domains for ia64 Message-Id: <20040820080621.GA2310@elte.hu> List-Id: References: <200408131108.40502.jbarnes@engr.sgi.com> <200408171657.32357.jbarnes@engr.sgi.com> <41255DBA.3030909@yahoo.com.au> <200408192222.35512.jbarnes@engr.sgi.com> In-Reply-To: <200408192222.35512.jbarnes@engr.sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Jesse Barnes Cc: Nick Piggin , akpm@osdl.org, linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org, John Hawkes * Jesse Barnes wrote: > This patch adds some more NUMA specific logic to the creation of > scheduler domains. Domains spanning all CPUs in a large system are > too large to schedule across efficiently, leading to livelocks and > inordinate amounts of time being spent in scheduler routines. With > this patch applied, the node scheduling domains for NUMA platforms > will only contain a specified number of nearby CPUs, based on the > value of SD_NODES_PER_DOMAIN. It also allows arches to override > SD_NODE_INIT, which sets the domain scheduling parameters for each > node's domain. This is necessary especially for large systems. looks good to me too. Signed-off-by: Ingo Molnar Ingo