Interrupt storm with MSI in combination with em1

[Mike Tancsa]

On 5/6/2011 11:02 AM, Daan Vreeken wrote:
> One core is spending half it's time handling interrupts.
> /var/log/messages doesn't show any new message since the storm 
> started. "vmstat -i" now shows :
> 
> 	# vmstat -i
> 	interrupt                          total       rate
> 	irq3: uart1                       917384         63
> -->	irq16: ehci0                   809547235      55608
> 
> Apart from spending far too much time handling interrupts, the machine works 
> fine, so I'll let it run in case anyone wants me to try something on it.
> 


Do you have any usb devices plugged in ? ie what does
usbconfig

show ?

Also, what USB settings do you have in the BIOS ? I would try disabling
usb legacy mode and and things like 80-64 translation.

	---Mike


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Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike at sentex.net
Providing Internet services since 1994 www.sentex.net
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