Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161093AbWHRTbL (ORCPT ); Fri, 18 Aug 2006 15:31:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932246AbWHRTbL (ORCPT ); Fri, 18 Aug 2006 15:31:11 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:15551 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S932243AbWHRTbJ (ORCPT ); Fri, 18 Aug 2006 15:31:09 -0400 Subject: Re: How to avoid serial port buffer overruns? From: Lee Revell To: Raphael Hertzog Cc: Paul Fulghum , Linux Kernel ML In-Reply-To: <20060817161042.GC10818@ouaza.com> References: <20060816104559.GF4325@ouaza.com> <1155753868.3397.41.camel@mindpipe> <44E37095.9070200@microgate.com> <1155762739.7338.18.camel@mindpipe> <1155767066.2600.19.camel@localhost.localdomain> <20060817161042.GC10818@ouaza.com> Content-Type: text/plain Date: Fri, 18 Aug 2006 15:31:07 -0400 Message-Id: <1155929467.2924.41.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 645 Lines: 19 On Thu, 2006-08-17 at 18:10 +0200, Raphael Hertzog wrote: > With the 2.6.17.7 kernel (configured with CONFIG_PREEMPT and > CONFIG_HZ=1000), I'm seeing overruns starting at 38400 bauds. So > compared to plain 2.4, it's better. However compared to the patched > 2.4, it's worse. > (Sorry for hijacking your thread) Have you tried it with HZ=100? HZ=1000 might just be too much for that board. Lee - 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/