netdev - Re: [PATCH] forcedeth: make msi-x different name for rx-tx

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Message-ID: <20090209120057.GB17782@elte.hu>
Date:	Mon, 9 Feb 2009 13:00:57 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Jeff Garzik <jeff@...zik.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ayaz Abdulla <aabdulla@...dia.com>,
	"David S. Miller" <davem@...emloft.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	NetDev <netdev@...r.kernel.org>
Subject: Re: [PATCH] forcedeth: make msi-x different name for rx-tx


* Yinghai Lu <yinghai@...nel.org> wrote:

> Ingo Molnar wrote:
> > * Yinghai Lu <yinghai@...nel.org> wrote:
> > 
> >> Ingo Molnar wrote:
> >>> Cool cleanups!
> >>>
> >>> Would you mind to also fix the following - on all my systems that have 
> >>> forcedeth gigabit ethernet i've been getting these bogus warnings for 
> >>> _years_, under moderate load:
> >>>
> >>>   eth2: too many iterations (16) in nv_nic_irq.
> >>>
> >>> I think a 64 iterations limit will work much better. (i tried a limit of 50 
> >>> a year ago for a while and it worked fine and had no side effects - and the 
> >>> bogus warnings were done.)
> >> you may enable CONFIG_FORCEDETH_NAPI.
> >>
> >> we should enable NAPI for forcedeth by default, and try to squash more bugs out.
> > 
> > i do have that:
> > 
> >  CONFIG_FORCEDETH=y
> >  CONFIG_FORCEDETH_NAPI=y
> > 
> > and the messages still come.
> 
> so you systems are using ioapic routing, or msi.
> 
> and those messages are from 
> nv_nic_irq_optimized or nv_nic_irq
> for TX or OTHER (timerirq).

yes, IO-APIC:

 18:      81386  306713817          0          0 1413724087          0          0          
0          0          0          0          0          0          0          0          
0   IO-APIC-fasteoi   eth2

Those messages do come and are annoying.

	Ingo
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