From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 2 May 2000 23:34:39 +0100 From: "Stephen C. Tweedie" Subject: Re: kswapd @ 60-80% CPU during heavy HD i/o. Message-ID: <20000502233439.A10012@redhat.com> References: <20000502221405.O1389@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: ; from riel@conectiva.com.br on Tue, May 02, 2000 at 06:42:31PM -0300 Sender: owner-linux-mm@kvack.org Return-Path: To: riel@nl.linux.org Cc: "Stephen C. Tweedie" , Andrea Arcangeli , Roger Larsson , linux-kernel@vger.rutgers.edu, linux-mm@kvack.org List-ID: Hi, On Tue, May 02, 2000 at 06:42:31PM -0300, Rik van Riel wrote: > On Tue, 2 May 2000, Stephen C. Tweedie wrote: > Ermmm, a few days ago (yesterday?) you told me on irc that we > needed to balance between zones ... On a single NUMA node, definitely. We need balance between all of the zones which may be in use in a specific allocation class. NUMA is a very different issue. _Some_ memory pressure between nodes is necessary: if one node is completely out of memory then we may have to start allocating memory on other nodes to tasks tied to the node under pressure. But in the normal case, you really do want NUMA memory classes to be as independent of each other as possible. --Stephen -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/