From owner-freebsd-current@FreeBSD.ORG Sun Jun 5 07:26:14 2005 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A410616A42D for ; Sun, 5 Jun 2005 07:26:14 +0000 (GMT) (envelope-from dwhite@gumbysoft.com) Received: from carver.gumbysoft.com (carver.gumbysoft.com [66.220.23.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7838643D1D for ; Sun, 5 Jun 2005 07:26:14 +0000 (GMT) (envelope-from dwhite@gumbysoft.com) Received: by carver.gumbysoft.com (Postfix, from userid 1000) id 460E472DD4; Sun, 5 Jun 2005 00:26:14 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by carver.gumbysoft.com (Postfix) with ESMTP id 407BA72DCB; Sun, 5 Jun 2005 00:26:14 -0700 (PDT) Date: Sun, 5 Jun 2005 00:26:14 -0700 (PDT) From: Doug White To: sam In-Reply-To: <429FBCAA.80100@tech-21.com.hk> Message-ID: <20050605002346.N95513@carver.gumbysoft.com> References: <20050602185024.P45383@carver.gumbysoft.com> <429FBCAA.80100@tech-21.com.hk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: current@freebsd.org Subject: Re: add paging to "show msgbuf" X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 05 Jun 2005 07:26:14 -0000 On Fri, 3 Jun 2005, sam wrote: > Doug White wrote: > > >This patch makes the "show msgbuf" ddb command use the pager instead of > >just blasting it out. This helps me with a system that corrupts serial > >output without flow control unless you give it bite-sized pieces. > > > >http://people.freebsd.org/~dwhite/patches/subr_prf.c.20050602.patch > > > >I'll commit this in a few days if there are no objections. > > > > > > > Is this related to the problem when communcation established thru serial > console? Not that I'm aware of, at least generally speaking. This is specific to the IBM/Intel blade servers I've been working on some compatibilty issues with. The blades provide access to the serial port via a Serial-Over-LAN internal connection, but the BMC/BSMP on each blade is too slow to take 19200 baud without flow control and convert it into UDP packets without getting out of sync during heavy output (like booting). Putting the pager in lets me advance one line at a time which keeps the display from turning to mush. -- Doug White | FreeBSD: The Power to Serve dwhite@gumbysoft.com | www.FreeBSD.org