From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with SMTP id 39CD76B007D for ; Thu, 21 Jan 2010 10:29:48 -0500 (EST) Subject: Re: [RFC -v2 PATCH -mm] change anon_vma linking to fix multi-process server scalability issue From: Minchan Kim In-Reply-To: <4B57E442.5060700@redhat.com> References: <20100117222140.0f5b3939@annuminas.surriel.com> <20100121133448.73BD.A69D9226@jp.fujitsu.com> <4B57E442.5060700@redhat.com> Content-Type: text/plain; charset="UTF-8" Date: Fri, 22 Jan 2010 00:29:35 +0900 Message-ID: <1264087775.1818.26.camel@barrios-desktop> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Rik van Riel Cc: KOSAKI Motohiro , linux-mm@kvack.org, linux-kernel@kvack.org, Lee Schermerhorn , lwoodman@redhat.com, aarcange@redhat.com List-ID: Hi, Rik. Actually, I tested this patch a few days ago. I met problem like you that hang with udev. I will debug it when I have a time. :) On Thu, 2010-01-21 at 00:21 -0500, Rik van Riel wrote: > Today having 1000 client connections to a forking server is > considered a lot, but I suspect it could be more common in a > few years. I would like Linux to be ready for those kinds of > workloads. > BTW, last year I suggested that removing anon_vma facility itself in no swap machine(ie, embedded machine). Although your patch add small cost, many of small memory machine don't like it if they become to aware this patch. So I want to make this patch configurable until we prove this patch is no cost and afterwards we can remove configurable option. Thanks for new trial to improve VM. :) -- Kind regards, Minchan Kim -- 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-mm.org/ . Don't email: email@kvack.org