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Date: Sat, 19 Sep 2009 17:55:38 -0400
From: Pierre-Luc Drouin <pldrouin@pldrouin.net>
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Subject: IRQ storm when trying to burn a CD/DVD with JMicron JMB363
 controller and PATA DVD burner
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Hi,

My motherboard (EVGA X58 Classified) has a JMicron JMB363 SATA300/PATA 
controller and it seems to be working fine with FreeBSD as long as I 
don't try burning a DVD or a CD with my PATA DVD burner, which is the 
only device hooked to the controller. However, when I try burning a CD 
or a DVD with either cdrecord or growisofs, I get the following:

interrupt storm detected on "irq17:"; throttling interrupt source
interrupt storm detected on "irq17:"; throttling interrupt source
interrupt storm detected on "irq17:"; throttling interrupt source
interrupt storm detected on "irq17:"; throttling interrupt source
interrupt storm detected on "irq17:"; throttling interrupt source
interrupt storm detected on "irq17:"; throttling interrupt source
interrupt storm detected on "irq17:"; throttling interrupt source
interrupt storm detected on "irq17:"; throttling interrupt source
...

I have seen a few emails on the mailing lists from people having the 
exact same issue with this controller 2 years ago, but I could not find 
any helpful reply. Is there any workaround for this?

Thanks!