From: Stephen Hemminger <shemminger@linux-foundation.org>
To: linux@horizon.com
Cc: netdev@vger.kernel.org, linux@horizon.com
Subject: Re: arp-scan triggers via-velocity "eth0: excessive work at interrupt"
Date: Wed, 13 Jun 2007 11:39:58 -0700 [thread overview]
Message-ID: <20070613113958.2dc3332f@localhost> (raw)
In-Reply-To: <20070613015638.31637.qmail@science.horizon.com>
On 12 Jun 2007 21:56:38 -0400
linux@horizon.com wrote:
> It kind of surprised me that sending 254 arp packets by using the arp-scan
> tool (http://www.nta-monitor.com/tools/arp-scan/) on a /24 consistently
> triggers a burst of "eth0: excessive work at interrupt."
>
> This is a 600 MHz PIII, 2.6.22-rc4, via-velocity driver.
>
> model name : Pentium III (Katmai)
> stepping : 3
> cpu MHz : 601.406
> cache size : 512 KB
>
> 00:09.0 Ethernet controller [0200]: VIA Technologies, Inc. VT6120/VT6121/VT6122 Gigabit Ethernet Adapter [1106:3119] (rev 11)
>
> Just double-checking... the program actually sent 463 packets (256 +
> a retry to all those that didn't respond to the first one), and triggers
> 11 copies of the kernel message.
>
> Command line: arp-scan -I eth0 -l [-v]
The via-velocity needs NAPI among lots of other fixes. The driver is too vendor ish
and nobody works on it.
prev parent reply other threads:[~2007-06-13 18:41 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-13 1:56 arp-scan triggers via-velocity "eth0: excessive work at interrupt" linux
2007-06-13 18:39 ` Stephen Hemminger [this message]
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