Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261358AbVACApI (ORCPT ); Sun, 2 Jan 2005 19:45:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261369AbVACApI (ORCPT ); Sun, 2 Jan 2005 19:45:08 -0500 Received: from bay14-f8.bay14.hotmail.com ([64.4.49.8]:63131 "EHLO hotmail.com") by vger.kernel.org with ESMTP id S261358AbVACApC (ORCPT ); Sun, 2 Jan 2005 19:45:02 -0500 Message-ID: X-Originating-IP: [80.15.132.11] X-Originating-Email: [tonyosborne_a@hotmail.com] From: "tony osborne" To: linux-kernel@vger.kernel.org Subject: Main CPU- I/O CPU interaction Date: Mon, 03 Jan 2005 00:44:36 +0000 Mime-Version: 1.0 Content-Type: text/plain; format=flowed X-OriginalArrivalTime: 03 Jan 2005 00:45:00.0963 (UTC) FILETIME=[74DC3F30:01C4F12D] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1093 Lines: 26 Hello, I wish to be personally CC'ed the answers/comments posted to the list in response to this post . The I/O devices are equipped with dedicated processor to free the main CPU from doing the low level I/O operations. However, if i am editing and updating a big size file and i want to save it afterwards, i notice my PC getting blocked while saving the file which theoritically should NOT happen as it is up to the I/O device processor and not the main CPU to save the data into the disk; the main CPU could switch to another process after giving the high level command -save-to the device processor; so why the main CPU is blocked while saving such big size files thanks _________________________________________________________________ It's fast, it's easy and it's free. Get MSN Messenger today! http://www.msn.co.uk/messenger - 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/