Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264750AbTFAWoT (ORCPT ); Sun, 1 Jun 2003 18:44:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264753AbTFAWoS (ORCPT ); Sun, 1 Jun 2003 18:44:18 -0400 Received: from bms.ne.client2.attbi.com ([24.62.163.168]:23432 "EHLO ns.briggsmedia.com") by vger.kernel.org with ESMTP id S264750AbTFAWoS (ORCPT ); Sun, 1 Jun 2003 18:44:18 -0400 Subject: athlon guidance From: Joe Briggs To: LKML Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Mailer: Ximian Evolution 1.0.8 (1.0.8-10) Date: 01 Jun 2003 18:57:47 -0400 Message-Id: <1054508267.1840.18.camel@family> Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1782 Lines: 35 I am attempting to build a 16-camera surveillance system with 8 2-channel multiplexed frame-grabber channels each.. Each channel is read at at about 5 frames per second, the image converted into JPEG and saved, and an MPEG-1 clip made at the same time (lots of storage, yes). I typically use a small IDE drive for my OS, and a 2-drive RAID-0 built with WD120JB 8-MB cache drives. I have learned the hard way that regular IDE RAID controllers of the Promise type loose interrupts and result in disk corruption, whereas the 3-ware (with its SCSI-like hardware) are reliable. There is a LOT of processing and storage going on here, and I have had good luck on my 8-camera systems using a GigaByte GA7VAXP with AMD2400XP processors, but average about 10% CPU utilization for each active (detected motion, now capturing and encoding) channel. So when all 8 cameras are active, I sustain about 80% or more total CPU loading. Typically never more than 5 are active at the same time. My question is how can I scale up to get 16 camera channels? I use Debian Woody 2.4.19 with Reiserfs (good job Hans!). The fastest Athlon that I can get is a AMD3200 XP with 400 Mhz FSB. On the other hand, I can use the Tyan 2466 Dual Athlon board, but MP processors only have a 266 Mhz FSB and the fastest speed is the 2800 MP. So, given the nature of the CPU and data intensive application, which is the faster platform: a slower 2800/266 MHZ FSB dual processor or a single 3200/400 MHZ FSB processor? All suggestions and analysis welcomed. Joe - 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/