On Wed, 27 Jul 2005 03:49:06 +0100
Rui Paulo <rpaulo@NetBSD.org> wrote:

> On 2005.07.26 20:15:21 +0000, mcesare@nc.rr.com wrote:
> | I've seen this on two different machines now with hme 100BaseT cards
> | 
> | Configuring network interfaces: le0 hme0stray interrupt ipl 0x7
> | pc=0xf0183838 npc=0xf018383c psr=400001c2<S,PS>
> | 
> | both get this just after configuring hme0
> | never see it again.
> | Is this normal ?
> 
> http://netbsd.org/Documentation/kernel/
> 
>     What does Stray interrupt on IRQ 7 mean? (top)                              
>                                                                                 
>    The "Stray interrupt on IRQ 7" kernel message means that the interrupt       
>    controller reported an unmasked interrupt on IRQ 7, but no driver attached   
>    to that IRQ 'claimed' it.                                                    
> 
>    ...
> 
> I think this also applies to SPARC, but with IPLs, not IRQs.
> 
> Anyway, maybe hme(4) is missing some interrupts ?

This happens here quite often under full network load. The CPU seems to
spend 70-80% of its cycles in "interrupt" according to top (interrupt handler ?).
Transferring about 1GB through the box makes the error happen about 2 or 3
times.
That's on a SS5/110 with 32MB of RAM, never seems to swap, QFE 2.0,
NetBSD 2.0.
What would make it "miss" some interrupts ?

khaqq

# dmesg | grep "ipl 7"
hme0 at sbus0 slot 1 offset 0x8c00000 level 4 (ipl 7): Sun Happy Meal Ethernet (SUNW,hme)
hme1 at sbus0 slot 1 offset 0x8c10000 level 4 (ipl 7): Sun Happy Meal Ethernet (SUNW,hme)
hme2 at sbus0 slot 1 offset 0x8c20000 level 4 (ipl 7): Sun Happy Meal Ethernet (SUNW,hme)
hme3 at sbus0 slot 1 offset 0x8c30000 level 4 (ipl 7): Sun Happy Meal Ethernet (SUNW,hme)

# dmesg | grep "ipl 0x7"
stray interrupt ipl 0x7 pc=0xf0009ee8 npc=0xf0009eec psr=44000c7<S,PS>
stray interrupt ipl 0x7 pc=0xf0009ef4 npc=0xf0009ef8 psr=44000c7<S,PS>
stray interrupt ipl 0x7 pc=0xf0009eec npc=0xf0009ef0 psr=44000c7<S,PS>
stray interrupt ipl 0x7 pc=0xf0009ee8 npc=0xf0009eec psr=44000c7<S,PS>
stray interrupt ipl 0x7 pc=0xf0009efc npc=0xf0009f00 psr=44000c7<S,PS>
(...)