Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 9 Nov 2001 02:21:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 9 Nov 2001 02:21:40 -0500 Received: from vasquez.zip.com.au ([203.12.97.41]:5386 "EHLO vasquez.zip.com.au") by vger.kernel.org with ESMTP id ; Fri, 9 Nov 2001 02:21:29 -0500 Message-ID: <3BEB82B8.541558CA@zip.com.au> Date: Thu, 08 Nov 2001 23:16:08 -0800 From: Andrew Morton X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.4.14-pre8 i686) X-Accept-Language: en MIME-Version: 1.0 To: "David S. Miller" CC: ak@suse.de, anton@samba.org, mingo@elte.hu, linux-kernel@vger.kernel.org Subject: Re: speed difference between using hard-linked and modular drives? In-Reply-To: <3BEB7DA6.BC8793B1@zip.com.au>, <20011108.220444.95062095.davem@redhat.com> <20011109073946.A19373@wotan.suse.de> <3BEB7DA6.BC8793B1@zip.com.au> <20011108.231717.85686073.davem@redhat.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org "David S. Miller" wrote: > > From: Andrew Morton > Date: Thu, 08 Nov 2001 22:54:30 -0800 > > I played with that earlier in the year. Shrinking the hash table > by a factor of eight made no measurable difference to anything on > a Pentium II. The hash distribution was all over the place though. > Lots of buckets with 1-2 pages, lots with 12-13. > > What is the distribution when you don't shrink the hash > table? > Well on my setup, there are more hash buckets than there are pages in the system. So - basically empty. If memory serves me, never more than two pages in a bucket. - 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/