Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753438Ab0AITcW (ORCPT ); Sat, 9 Jan 2010 14:32:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752440Ab0AITcW (ORCPT ); Sat, 9 Jan 2010 14:32:22 -0500 Received: from mail-px0-f174.google.com ([209.85.216.174]:41940 "EHLO mail-px0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751644Ab0AITcV convert rfc822-to-8bit (ORCPT ); Sat, 9 Jan 2010 14:32:21 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=brJdYc0GcHooaznSNTiI1Vc78BgWauqNbQ3ddCWkvAuRm3w9lFf/xmhEWT/Edes7Rj XZBjt6dFTCUJILMNIybpWVFxFjXycKeDsRDA2czBarWnXRbObQ7AtjG5izfNOJ4qkAfO rVYaFrF1IZeBgy3vgk+6boq9tYykCezxrqrJc= MIME-Version: 1.0 In-Reply-To: <20100109191025.GK4757@const.famille.thibault.fr> References: <20100109191025.GK4757@const.famille.thibault.fr> Date: Sat, 9 Jan 2010 11:32:19 -0800 Message-ID: Subject: Re: Linux Serial Performance From: "Paul G. Allen" To: Samuel Thibault , "Paul G. Allen" , linux-kernel Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 892 Lines: 29 Well, as far as I know. Same code on both systems. The embedded device operates at 115200, 8N1, no flow control. It uses RPC/SLIP protocol for commands and data. They talk to each other, but the Linux system just takes forever to send the data. PGA On Sat, Jan 9, 2010 at 11:10 AM, Samuel Thibault wrote: > Paul G. Allen, le Sat 09 Jan 2010 10:57:48 -0800, a écrit : >> In all cases, the profiler shows the serial Tx >> to be about 20x faster (twenty times) on Windows XP than in Linux. > > Did you properly set the serial port speed? > > Samuel > -- Paul G. Allen Random Logic Consulting www.randomlogic.com -- 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/