From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sun, 14 May 2000 14:12:53 +0200 (CEST) From: Ingo Molnar Reply-To: mingo@elte.hu Subject: Re: pre8: where has the anti-hog code gone? 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: Rik van Riel Cc: Linus Torvalds , MM mailing list , linux-kernel@vger.rutgers.edu List-ID: On Sun, 14 May 2000, Rik van Riel wrote: > Mark the zone as a "steal-before-allocate" zone while > one user process is in the page stealer because it > could not find an easy page. this i believe is fundamentally single-threaded (and now with the latest Linus VM we have massively parallel allocation points). The problem is not to notice low memory situations (we already have the low_on_memory flag), the problem is to un-anonymize resulting free pages. Anonym freeing == unfairness, which unfairness ultimately leads to NULL gfp and bad allocation latency. Ingo -- 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/