From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 13 Jan 2000 19:37:18 +0100 (CET) From: Rik van Riel Subject: Re: [RFC] 2.3.39 zone balancing In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Alan Cox Cc: Kanoj Sarcar , torvalds@transmeta.com, mingo@chiara.csoma.elte.hu, andrea@suse.de, linux-mm@kvack.org, linux-kernel@vger.rutgers.edu List-ID: On Thu, 13 Jan 2000, Alan Cox wrote: > > I think that busier machines probably have a larger need > > for DMA memory than this code fragment will give us. I > > have the gut feeling that we'll want to keep about 512kB > > or more free in the lower 16MB of busy machines... > > 2.2.x uses a simple algorithm. Normally allocations come from the > main pool if it fails we use the DMA pool. That seems to work just > fine. Of course, I should have thought of that. Our `high-to-low' allocation strategy should make sure that the free pages `propagate down'... Now we'll only want to build something into kswapd so that rebalancing the high memory zones is done in the background. regards, Rik -- The Internet is not a network of computers. It is a network of people. That is its real strength. -- 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.nl.linux.org/Linux-MM/