From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 18 May 2006 11:41:01 -0700 (PDT) From: Christoph Lameter Subject: Re: Query re: mempolicy for page cache pages In-Reply-To: <1147976994.5195.123.camel@localhost.localdomain> Message-ID: References: <1147974599.5195.96.camel@localhost.localdomain> <200605182012.19570.ak@suse.de> <1147976994.5195.123.camel@localhost.localdomain> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Lee Schermerhorn Cc: Andi Kleen , linux-mm , Steve Longerbeam , Andrew Morton List-ID: On Thu, 18 May 2006, Lee Schermerhorn wrote: > Yes, for not overburdening any single node. Paul Jackson's > "spread" patches address this. Actually, for [some of] our platforms, > we can hardware interleave some % of memory at the cache line level. > This shows up as a memory-only node. Some folks claim it would be > beneficial to be able to specify a page cache policy to prefer this > hardware interleaved node for the page cache. I see that Ray > Bryant once proposed a patch to define a separate global and > optional per process policy to be used for page cache pages. This > also "died on the vine"... I'd be very interested in some scheme to address the overburdening in a simple way. Replication may be useful in addition to spreading to limit the traffic on the NUMA interlink. -- 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