From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: appearing again: kernel: eth0: too many iterations (6) in nv_nic_irq Date: Mon, 28 Jan 2008 08:06:56 -0800 Message-ID: <20080128080656.1cc8a4e0@deepthought> References: <18333.55687.621653.838538@fisica.ufpr.br> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: carlos@fisica.ufpr.br (Carlos Carvalho) Return-path: Received: from mail.vyatta.com ([216.93.170.194]:53983 "EHLO mail.vyatta.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752528AbYA1QHA (ORCPT ); Mon, 28 Jan 2008 11:07:00 -0500 In-Reply-To: <18333.55687.621653.838538@fisica.ufpr.br> Sender: netdev-owner@vger.kernel.org List-ID: On Mon, 28 Jan 2008 11:32:55 -0200 carlos@fisica.ufpr.br (Carlos Carvalho) wrote: > It seems that this problem with NVidia's nic comes up more and more... > From time to time we get this in the log: > > Jan 27 14:43:12 duvel kernel: eth0: too many iterations (6) in nv_nic_irq. > > We algo get > > Jan 27 11:32:43 duvel kernel: KERNEL: assertion ((int)tcp_packets_in_flight(tp) >= 0) failed at net/ipv4/tcp_input.c (1274) > > But at different moments, as shown above. Are they related? What's the > meaning of the "assertion failed" one? > > The messages are more likely to appear when traffic is high > (>500Mb/s). This is with 2.6.22.16. > > Any suggestions? > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Use NAPI which is available as configuration option in this driver. Increase the max_interrupt_work from the ridiculously low value of 5 to something more larger like 15, with module parameter in /etc/modprobe.d/options: options forcedeth max_interrupt_work=15 Also, see if you motherboard supports MSI, if so add "msi=1" module parameter -- Stephen Hemminger