Date: Tue, 5 May 2009 01:49:00 -0400 From: Duane <duane@cheekymonkey.us> To: freebsd-questions <freebsd-questions@freebsd.org> Subject: Re: Part II: Running SMP kernel but only one cpu Message-ID: <5e8ad96d0905042249p670eefeakf61d578bf09e373@mail.gmail.com> In-Reply-To: <ade45ae90905042045i7b27d289h5088d60daecd53da@mail.gmail.com> References: <5e8ad96d0905041746o67c463e9t1297a0b3103557bf@mail.gmail.com> <ade45ae90905042045i7b27d289h5088d60daecd53da@mail.gmail.com>
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--000e0cd215ecec25e7046923d555 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit On 5/4/09, Tim Judd <tajudd@gmail.com> wrote: > IRQ15 is typically your secondary IDE controller; but due to PCI (or E-ISA) > plug&play, including the PnP the BIOS may setup, lots of others can be on > that bus too. This box has one SCSI card running two SCSI drives. The IDE's are disabled in the BIOS. But the SCSI card does feature in the problem: > # grep -i irq15 /var/run/dmesg.boot No 'irq15' is found. One can see that the "interrupt storm" begins when the SCSI drives begin to spin up, IF the machine is booting with two cpus initialized. dmesg.boot is attached for everyone's edification and amusement! Another interesting datapoint is that if the machine is booted in Safe Mode the "interrupt storm" disappears, but so does the second cpu. Best regards, -- Duane --000e0cd215ecec25e7046923d555 Content-Type: application/octet-stream; name="dmesg.boot" Content-Disposition: attachment; filename="dmesg.boot" Content-Transfer-Encoding: base64 X-Attachment-Id: file0 Q29weXJpZ2h0IChjKSAxOTkyLTIwMDggVGhlIEZyZWVCU0QgUHJvamVjdC4KQ29weXJpZ2h0IChj KSAxOTc5LCAxOTgwLCAxOTgzLCAxOTg2LCAxOTg4LCAxOTg5LCAxOTkxLCAxOTkyLCAxOTkzLCAx OTk0CglUaGUgUmVnZW50cyBvZiB0aGUgVW5pdmVyc2l0eSBvZiBDYWxpZm9ybmlhLiBBbGwgcmln aHRzIHJlc2VydmVkLgpGcmVlQlNEIGlzIGEgcmVnaXN0ZXJlZCB0cmFkZW1hcmsgb2YgVGhlIEZy ZWVCU0QgRm91bmRhdGlvbi4KRnJlZUJTRCA2LjQtUkVMRUFTRSAjMDogTW9uIE1heSAgNCAwMjoy ODowNCBFRFQgMjAwOQogICAgcm9vdEBwb29iYWgubGVnb21lbm9uLm9yZzovdXNyL29iai91c3Iv c3JjL3N5cy9TTVBCT0IxClRpbWVjb3VudGVyICJpODI1NCIgZnJlcXVlbmN5IDExOTMxODIgSHog cXVhbGl0eSAwCkNQVTogUGVudGl1bSBQcm8gKDE3OS42My1NSHogNjg2LWNsYXNzIENQVSkKICBP cmlnaW4gPSAiR2VudWluZUludGVsIiAgSWQgPSAweDYxNyAgU3RlcHBpbmcgPSA3CiAgRmVhdHVy ZXM9MHhmYmZmPEZQVSxWTUUsREUsUFNFLFRTQyxNU1IsUEFFLE1DRSxDWDgsQVBJQyxTRVAsTVRS 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