Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 26 Feb 2003 13:22:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 26 Feb 2003 13:22:50 -0500 Received: from ns.suse.de ([213.95.15.193]:11791 "EHLO Cantor.suse.de") by vger.kernel.org with ESMTP id ; Wed, 26 Feb 2003 13:22:50 -0500 Date: Wed, 26 Feb 2003 19:33:04 +0100 From: Andi Kleen To: "Martin J. Bligh" Cc: Andi Kleen , lse-tech@projects.sourceforge.net, akpm@digeo.com, linux-kernel@vger.kernel.org Subject: Re: [Lse-tech] [PATCH] New dcache / inode hash tuning patch Message-ID: <20030226183304.GA30836@wotan.suse.de> References: <20030226164904.GA21342@wotan.suse.de> <15730000.1046283789@[10.10.2.4]> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <15730000.1046283789@[10.10.2.4]> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 606 Lines: 16 On Wed, Feb 26, 2003 at 10:23:09AM -0800, Martin J. Bligh wrote: > It actually seems a fraction slower (see systimes for Kernbench-16, > for instance). Can you play a bit with the hash table sizes? Perhaps double the dcache hash and half the inode hash ? I suspect it really just needs a better hash function. I'll cook something up based on FNV hash. -Andi - 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/