Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932367AbWHQPwA (ORCPT ); Thu, 17 Aug 2006 11:52:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932516AbWHQPwA (ORCPT ); Thu, 17 Aug 2006 11:52:00 -0400 Received: from arrakeen.ouaza.com ([212.85.152.62]:36044 "EHLO arrakeen.ouaza.com") by vger.kernel.org with ESMTP id S932367AbWHQPv7 (ORCPT ); Thu, 17 Aug 2006 11:51:59 -0400 Date: Thu, 17 Aug 2006 17:48:42 +0200 From: Raphael Hertzog To: Alan Cox Cc: Russell King , Paul Fulghum , Lee Revell , Linux Kernel ML Subject: Re: How to avoid serial port buffer overruns? Message-ID: <20060817154842.GB10818@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> <20060816231033.GB12407@flint.arm.linux.org.uk> <1155806446.15195.42.camel@localhost.localdomain> <20060817092811.GA28474@flint.arm.linux.org.uk> <1155815832.15195.80.camel@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1155815832.15195.80.camel@localhost.localdomain> User-Agent: Mutt/1.5.12-2006-07-14 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1099 Lines: 34 On Thu, 17 Aug 2006, Alan Cox wrote: > > > > is there's something in the system starving interrupt servicing. > > > > Serial is very sensitive to that, and increases in other system > > > > latencies tends to have an adverse impact on serial. > > > > > > I see no support for the 16650 specific bits in the driver, so that > > > alone may be a problem ? > > > > Huh? 16550 not 16650. Did you miss this? > > Raphael said "I forgot to mention the kind of UART in my mail but it is > a 16650A" That's a typo. :-/ Two lines further in the same mail there was: bash-2.05a# cat /proc/tty/driver/serial serinfo:1.0 driver revision: 0: uart:16550A port:000003F8 irq:4 tx:31 rx:7 RTS|CTS|DTR|DSR ^^^^^^ So I meant 16550A. Sorry. Regards, -- Rapha?l Hertzog Premier livre fran?ais sur Debian GNU/Linux : http://www.ouaza.com/livre/admin-debian/ - 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/