From mboxrd@z Thu Jan 1 00:00:00 1970 From: "John Hawkes" Date: Thu, 18 Mar 2004 23:35:51 +0000 Subject: Re: sched-domains Message-Id: <00db01c40d41$cf16f4c0$e3069aa3@PCJohn> List-Id: References: <20040317132100.106f62e7.akpm@osdl.org> In-Reply-To: <20040317132100.106f62e7.akpm@osdl.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org From: "Andrew Morton" ... > My question is: to what extent have the ia64 NUMA architectural people > reviewed this code, and what is the risk that someone will come along in > six months time saying we need to rip it all out? I am generally happy with the architecture of sched-domains. The big advantage I see for large Altix-like NUMA platforms is that much of the scheduler policy decisions are parameterized in sched_domain fields and are more easily tuned on a per-architecture and per-platform basis. In particular, it is easy to define additional scheduler domains that are larger than a single node and smaller than all the CPUs in the system, each domain having its own parameterized characteristics of load-balance frequency, etc. John Hawkes