Some MSI are not routed correctly

[John Baldwin]

On Wednesday, October 21, 2015 11:29:17 AM Maxim Sobolev wrote:
> Yes, I do. However, please note that for some reason they are not using
> nearly as much CPU time as the other 4 for some reason.
> 
>    11 root          -92    -     0K  1104K WAIT    3  95.3H  28.96%
> intr{irq267: igb0:que}
>    11 root          -92    -     0K  1104K WAIT    1  95.5H  24.41%
> intr{irq265: igb0:que}
>    11 root          -92    -     0K  1104K CPU2    2  95.2H  23.73%
> intr{irq266: igb0:que}
>    11 root          -92    -     0K  1104K WAIT    0  95.2H  23.05%
> intr{irq264: igb0:que}
>    11 root          -92    -     0K  1104K WAIT    6 286:37   1.12%
> intr{irq271: igb1:que}
>    11 root          -92    -     0K  1104K WAIT    7 278:05   1.12%
> intr{irq272: igb1:que}
>    11 root          -92    -     0K  1104K WAIT    5 284:26   1.07%
> intr{irq270: igb1:que}
>    11 root          -92    -     0K  1104K WAIT    4 290:41   0.98%
> intr{irq269: igb1:que}
> 
> CPU 0:   0.0% user,  0.0% nice,  0.9% system, 24.9% interrupt, 74.2% idle
> CPU 1:   0.5% user,  0.0% nice,  0.0% system, 26.3% interrupt, 73.2% idle
> CPU 2:   0.0% user,  0.0% nice,  1.4% system, 25.4% interrupt, 73.2% idle
> CPU 3:   0.0% user,  0.0% nice,  0.5% system, 23.9% interrupt, 75.6% idle
> CPU 4:   0.9% user,  0.0% nice,  2.3% system,  2.3% interrupt, 94.4% idle
> CPU 5:   1.4% user,  0.0% nice,  4.2% system,  4.2% interrupt, 90.1% idle
> CPU 6:   1.4% user,  0.0% nice,  3.8% system,  1.4% interrupt, 93.4% idle
> CPU 7:   2.8% user,  0.0% nice,  0.0% system,  3.8% interrupt, 93.4% idle
> 
> 34263 igb0:que 0
> 32308 igb0:que 1
> 35022 igb0:que 2
> 34593 igb0:que 3
> 14931 igb1:que 0
> 13059 igb1:que 1
> 12971 igb1:que 2
> 13032 igb1:que 3
> 
> So I guess interrupts are routed correctly after all, but for some reason
> driver takes some 5 times less time to process it on cpus 4-7
> (per-interrupt). Weird.

Are the pps rates the same?  It seems like the interrupt rates on igb0
are double those of igb1?

-- 
John Baldwin