[BUG] CONFIG_IRQBALANCE=y broken?
From: Marin Mitov
Date: Mon Apr 07 2008 - 13:18:23 EST
Hi Ingo, Thomas,
When kernel-2.6.24.x is compiled with
CONFIG_IRQBALANCE=y,
and heavy LAN (outbound) traffic, I experience LAN dying due to
IRQ# masked at the IO_APIC (bit 16 is 1, for the corresponding irq
vector) (SMP x86_32, AMD X2), as described in my previous post:
http://lkml.org/lkml/2008/3/25/165
and links to previous posts there in. When
CONFIG_IRQBALANCE is not set
I am not able to reproduce the problem. That makes me think that
there is a race/bug somewhere in the irq balancing code that
leaves (rarely) the corresponding IRQ# masked at the IO-APIC.
Any comments, suggestions, patches?
Additional info?
Thank you in advance for your answer.
Regards
Marin Mitov
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