Date: Wed, 01 Feb 2006 21:33:25 -0500 From: Chuck Swiger <cswiger@mac.com> To: Garrett Cooper <youshi10@u.washington.edu> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: "Interrupt storm"?! Message-ID: <43E16F75.3030406@mac.com> In-Reply-To: <52A0A2E7-CEA6-45E1-9EAF-E8438D869EBB@u.washington.edu> References: <52A0A2E7-CEA6-45E1-9EAF-E8438D869EBB@u.washington.edu>
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Garrett Cooper wrote: [ ... ] > Interrupt storm detected on "irq11: ahc0"; throttling interrupt source > ahc0: PCI error Interrupt at seqaddr = 0x9 > ach0: Data Parity Error Detected during address or write data phase > > Any ideas what this means? > ahc0 is the dev name for my adaptec scsi card. I also had some > issues just a little earlier with RAM and the slot on the motherboard I > was using (turns out the slot is bad and not the RAM), but this is sure > a weird error. Taking a look at "vmstat -i", and trying to avoid interrupt sharing with other devices if possible might help. (If you can, try turning off the USB controller in your BIOS, since that commonly shares an IRQ with other devices.) If you're seeing a RAM slot going bad, it's also quite possible that your motherboard is simply corrupting data and needs to be replaced. Check cooling, check power supply... -- -Chuck
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