Len Brown wrote:
John Sigler wrote:
# cat /proc/interrupts
CPU0
0: 37 XT-PIC-XT timer
1: 2 XT-PIC-XT i8042
2: 0 XT-PIC-XT cascade
7: 0 XT-PIC-XT acpi
10: 175 XT-PIC-XT eth2, Dta1xx
11: 1129 XT-PIC-XT eth0
12: 4 XT-PIC-XT eth1
14: 21482 XT-PIC-XT ide0
NMI: 0
LOC: 161632
ERR: 0
MIS: 0
IRQ 10 is shared between a NIC and an I/O board.
For eth2, the kernel said:
ACPI: PCI Interrupt 0000:00:0a.0[A] -> Link [LNKC]
-> GSI 10 (level, low) -> IRQ 10
For Dta1xx, the kernel said:
ACPI: PCI Interrupt 0000:02:0e.0[A] -> Link [LNKC]
-> GSI 10 (level, low) -> IRQ 10
Is it possible to avoid the two boards sharing IRQ 10?
Maybe. In this configuration, INTA of the two devices
is physically connected to the same wire on the device-side
of the interrupt re-mapper -- so you'd have to change the configuration.
If you have an IOAPIC and can enable it, that will not hurt --
I believe this board does not provide an IO-APIC.
Even the LAPIC is disabled in the BIOS.
(Why would they do that??)
though unless something else changes, these devices are still
tied together on the device-side of the mapper.
So if you can physically move one of the devices to another slot
that is your best bet.
I will try.
I'd need a bunch of info from your system to tell you what
you can do ahead of time, including full dmesg, lspci -vv
and acpidump.
The motherboard is an Adlink EBC-2000T with 3 on-board Intel 82559 NICs.
http://www.adlinktech.com/PD/web/PD_detail.php?pid=213
VIA Pro133T (VT82C694T + VT82C686B) chipset.
http://www.viaarena.com/default.aspx?PageID=40&STypeID=12
Kernel config:
http://linux.kernel.free.fr/latency/config-2.6.20.7-rt8-adlink-latency
dmesg:
http://linux.kernel.free.fr/latency/dmesg.adlink
lspci:
http://linux.kernel.free.fr/latency/lspci.adlink
acpidump:
http://linux.kernel.free.fr/latency/acpidump.adlink
Regards.
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