Hello,

With OpenBSD 5.3, our firewall does not handle our network load well.
We loose around 5% of packets and netstat shows a lot of Ierr.

That worked much better with 5.1. There was a change to not enable MSI
on 82572 chipset on our Intel card ( "Intel PRO/1000 QP (82571EB)" rev 0x06) in 
5.2 :
 
http://freshbsd.org/commit/openbsd/a47ca448720823019bc6c618bf178a47fd1af73a

My question is: could it be the cause of our load problem ?

5.1:
em0 at pci5 dev 0 function 0 "Intel PRO/1000 QP (82571EB)" rev 0x06: msi, 
address 00:15:17:ed:98:9d
em1 at pci5 dev 0 function 1 "Intel PRO/1000 QP (82571EB)" rev 0x06: msi, 
address 00:15:17:ed:98:9c
em2 at pci6 dev 0 function 0 "Intel PRO/1000 QP (82571EB)" rev 0x06: msi, 
address 00:15:17:ed:98:9f
em3 at pci6 dev 0 function 1 "Intel PRO/1000 QP (82571EB)" rev 0x06: msi, 
address 00:15:17:ed:98:9e

5.3 (on another box with the same hardware):
em0 at pci5 dev 0 function 0 "Intel PRO/1000 QP (82571EB)" rev 0x06: apic 1 int 
13, address 00:15:17:ed:98:65
em1 at pci5 dev 0 function 1 "Intel PRO/1000 QP (82571EB)" rev 0x06: apic 1 int 
6, address 00:15:17:ed:98:64
em2 at pci6 dev 0 function 0 "Intel PRO/1000 QP (82571EB)" rev 0x06: apic 1 int 
15, address 00:15:17:ed:98:67
em3 at pci6 dev 0 function 1 "Intel PRO/1000 QP (82571EB)" rev 0x06: apic 1 int 
13, address 00:15:17:ed:98:66

We don't have any problem with this card, how can we re-enable MSI (without 
reverting this change)?

Thanks, regards.

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