From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sat, 13 Jan 2001 00:05:14 -0800 (PST) From: Linus Torvalds Subject: Re: swapout selection change in pre1 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: Marcelo Tosatti Cc: linux-mm@kvack.org List-ID: On Sat, 13 Jan 2001, Marcelo Tosatti wrote: > > The swapout selection change in pre1 will make the kernel swapout behavior > not fair anymore to tasks which are sharing the VM (vfork()). > > I dont see any clean fix for that problem. Do you? What? It's the other way around: it used to be _extremely_ unfair towards threads, because threads woul dget swapped out _much_ more that non-threads. The new "count only nr of mm's" actually fixes a real problem in this area: a process with hundreds of threads would just get swapped out _way_ too quickly (it used to be counted as "hundreds of VM's", even though it's obviously just one VM, and should be swapped out as such). Linus -- 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/