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Date:      Sat, 29 Apr 2000 12:52:30 -0500
From:      Stephen <sdk@yuck.net>
To:        freebsd-hardware@FreeBSD.ORG
Subject:   IRQ question
Message-ID:  <20000429125230.A406@visi.com>

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I have a Intel Seattle (SE440BX) mainboard running 3.4-S with the following
bootup messages:

Apr 21 22:20:37 io /kernel: fxp0: <Intel EtherExpress Pro 10/100B Ethernet>
rev 0x08 int a irq 11 on pci0.13.0
Apr 21 22:20:37 io /kernel: fxp0: Ethernet address 00:90:27:ad:44:4a
Apr 21 22:20:37 io /kernel: fxp1: <Intel EtherExpress Pro 10/100B Ethernet>
rev 0x08 int a irq 11 on pci0.14.0
Apr 21 22:20:37 io /kernel: fxp1: Ethernet address 00:90:27:ad:44:c6
Apr 21 22:20:37 io /kernel: Probing for devices on PCI bus 1:
Apr 21 22:20:37 io /kernel: vga0: <Matrox model 051f graphics accelerator>
rev 0x00 int a irq 11 on pci1.0.0

Having just built another PC I learned that it's not optimal to have pci
devices sharing IRQ's.  So, not knowing about how FreeBSD interfaces with
the hardware, I'm wondering if I'm sacrificing performance by having 3
devices using IRQ 11.  Should I move cards/reconfig the BIOS to use
unassigned IRQ's?

Thanks,
Steve

-- 
sdk@yuck.net



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