From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [PATCH 0/5] make slab gfp fair From: Peter Zijlstra In-Reply-To: References: <1179350433.2912.66.camel@lappy> <1179386921.27354.29.camel@twins> Content-Type: text/plain Date: Thu, 17 May 2007 19:53:50 +0200 Message-Id: <1179424430.2925.7.camel@lappy> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Christoph Lameter Cc: Matt Mackall , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Thomas Graf , David Miller , Andrew Morton , Daniel Phillips , Pekka Enberg List-ID: On Thu, 2007-05-17 at 10:30 -0700, Christoph Lameter wrote: > On Thu, 17 May 2007, Peter Zijlstra wrote: > > > > 2. It seems to be based on global ordering of allocations which is > > > not possible given large systems and the relativistic constraints > > > of physics. Ordering of events get more expensive the bigger the > > > system is. > > > > > > How does this system work if you can just order events within > > > a processor? Or within a node? Within a zone? > > > > /me fails again.. > > > > Its about ensuring ALLOC_NO_WATERMARKS memory only reaches PF_MEMALLOC > > processes, not joe random's pi calculator. > > Watermarks are per zone? Yes, but the page allocator might address multiple zones in order to obtain a page. -- 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