From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: Re: netconsole still hangs Date: Wed, 12 Mar 2008 16:16:37 -0700 Message-ID: <20080312161637.b082b515.akpm@linux-foundation.org> References: <20080312161429.d5b1c67b.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit To: shemminger@linux-foundation.org, netdev@vger.kernel.org, rjw@sisk.pl Return-path: Received: from smtp1.linux-foundation.org ([140.211.169.13]:59079 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754377AbYCLXRK (ORCPT ); Wed, 12 Mar 2008 19:17:10 -0400 In-Reply-To: <20080312161429.d5b1c67b.akpm@linux-foundation.org> Sender: netdev-owner@vger.kernel.org List-ID: On Wed, 12 Mar 2008 16:14:29 -0700 Andrew Morton wrote: > > I thought the recent reverts fixed this, but it seems that it's just become > a little harder to hit. > > I'm seeing netconsole hangs on two x86_64 systems (2-way t61p laptop, 8-way > server). Both use e1000. > > With current mainline on the 8-way, create a printk storm with > > while true > do > echo t > /proc/sysrq-trigger > done > > and the machine goes tits-up after about five seconds. > whoops, hang on, it's still running. For some reason the receiving machine went super-slow after it had received a lot of data. I'll retest on the t61p this evening, see why it is freezing.