Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261863AbTICLDH (ORCPT ); Wed, 3 Sep 2003 07:03:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261891AbTICLDH (ORCPT ); Wed, 3 Sep 2003 07:03:07 -0400 Received: from mail2.sonytel.be ([195.0.45.172]:9899 "EHLO witte.sonytel.be") by vger.kernel.org with ESMTP id S261863AbTICLDF (ORCPT ); Wed, 3 Sep 2003 07:03:05 -0400 Date: Wed, 3 Sep 2003 13:02:32 +0200 (MEST) From: Geert Uytterhoeven To: "Brown, Len" cc: Giuliano Pochini , Larry McVoy , Linux Kernel Development Subject: RE: Scaling noise In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1029 Lines: 29 On Wed, 3 Sep 2003, Brown, Len wrote: > > Latency is not bandwidth. > > Bingo. > > The way to address memory latency is by increasing bandwidth and > increasing parallelism to use it -- thus amortizing the latency. HT is > one of many ways to do this. If systems are to grow faster at a rate > better than memory speeds, then plan on more parallelism, not less. More parallelism usually means more data to process, hence more bandwidth is needed => back to where we started. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds - 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/