Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264836AbUFLPBD (ORCPT ); Sat, 12 Jun 2004 11:01:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264843AbUFLPBD (ORCPT ); Sat, 12 Jun 2004 11:01:03 -0400 Received: from e1.ny.us.ibm.com ([32.97.182.101]:32705 "EHLO e1.ny.us.ibm.com") by vger.kernel.org with ESMTP id S264836AbUFLPBB (ORCPT ); Sat, 12 Jun 2004 11:01:01 -0400 Date: Sat, 12 Jun 2004 08:00:53 -0700 From: "Martin J. Bligh" To: Andi Kleen , Dave Hansen cc: torvalds@osdl.org, Linux Kernel Mailing List , Andy Whitcroft , Andrew Morton Subject: Re: [PATCH] Permit inode & dentry hash tables to be allocated > MAX_ORDER size Message-ID: <113620000.1087052452@[10.10.2.4]> In-Reply-To: <20040612131149.GA28870@colin2.muc.de> References: <263jX-5RZ-19@gated-at.bofh.it> <262nZ-56Z-5@gated-at.bofh.it> <263jX-5RZ-17@gated-at.bofh.it> <1087025760.18615.3.camel@nighthawk> <20040612131149.GA28870@colin2.muc.de> X-Mailer: Mulberry/2.2.1 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 643 Lines: 16 >> Since vmalloc() maps the pages with small pagetable entries (unlike most >> of the rest of the kernel address space), do you think the interleaving >> will outweigh any negative TLB effects? > > I think so, yes (assuming you run the benchmark on all CPUs) On the other hand, there's no reason we can't hack up a version of vmalloc to use large pages, and interleave only based on that. M. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/