* arp-scan triggers via-velocity "eth0: excessive work at interrupt"
@ 2007-06-13 1:56 linux
2007-06-13 18:39 ` Stephen Hemminger
0 siblings, 1 reply; 2+ messages in thread
From: linux @ 2007-06-13 1:56 UTC (permalink / raw)
To: netdev; +Cc: linux
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]
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: arp-scan triggers via-velocity "eth0: excessive work at interrupt"
2007-06-13 1:56 arp-scan triggers via-velocity "eth0: excessive work at interrupt" linux
@ 2007-06-13 18:39 ` Stephen Hemminger
0 siblings, 0 replies; 2+ messages in thread
From: Stephen Hemminger @ 2007-06-13 18:39 UTC (permalink / raw)
To: linux; +Cc: netdev, linux
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.
^ permalink raw reply [flat|nested] 2+ messages in thread
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