Date: Sat, 10 Jan 2009 11:15:10 +0800 From: Zhang Weiwu <zhangweiwu@realss.com> To: freebsd-questions@FreeBSD.org Cc: freebsd-questions-local@be-well.ilk.org Subject: Re: newbie: does irq setting in device.hints work? Message-ID: <496812BE.30405@realss.com> In-Reply-To: <44bpug2u4t.fsf@be-well.ilk.org> References: <4966D81B.8050107@realss.com> <44bpug2u4t.fsf@be-well.ilk.org>
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Lowell Gilbert wrote: > Zhang Weiwu <zhangweiwu@realss.com> writes: > >> >> That's strange, I didn't find manual where it say it work in some >> condition or for some device only. >> > > "Consult individual device drivers' manual pages for available keywords > and their possible values." > > Thanks. I shouldn't have overlooked this. >> Is there a way to assign uhci to use an irq differently? seems it is the >> cause of an interrupt storm problem I am having. >> > > I'm not really sure if uhci is set up to do that. You definitely want > uhci on its own interrupt if you can, not because it necessarily > generates a lot of them, but because it can spend a lot of time handling > each one... > > Have you checked what happens if you disable your APIC? > You mean ACPI? When the PC boots, I got a menu looks alike this one: http://www.freebsd.org/doc/en/books/handbook/install/boot-loader-menu.png except my 2nd choice was "with ACPI enabled" instead of ACPI disabled. I chose 2, result was the same (irq at 11) I also tried to move other devices occupying irq 11 away (cbb0 and ed1) by setting so in device.hints and both didn't work. [zhangweiwu@quasimodo ~]$ vmstat -i interrupt total rate irq0: clk 92204 980 irq1: atkbd0 188 2 irq6: fdc0 11 0 irq8: rtc 11802 125 irq11: cbb0 ed1+ 38 0 irq14: ata0 1699 18 Total 105942 1127 [zhangweiwu@quasimodo ~]$ dmesg | grep 'irq 11' uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port 0x9000-0x901f irq 11 at device 6.2 on pci0 ed1: <IBM Corp. Ethernet> at port 0x100-0x11f iomem 0x88000000-0x88003fff irq 11 function 0 config 1 on pccard0
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