Hi,
I use a dual-proc X5670 box without hyperthreading, so I have 12
cores. I use a connectx2 card, with ofed-1.5.2, essentially to make
multicast on IpOIb. I'm on a kernel 2.6.18-164.el5.
First question:
Why I have this type message during the boot ?
"mlx4_core 0000:03:00.0: Requested 25 vectors, but only 14 MSI-X
vectors available, trying again"
I thought that the drivers doesn't try to get more vectors than cpu
cores. In spite of this message the driver is loaded with MSI-X
capabilities.
So my second question:
Why when I look at the "/proc/interrupts", I don't have the impression
that the load balancing is effective. I have the habit to use steering
on ethernet adapters, but the behaviour doesn't corresponding. I
receive all the interrupts on the first "queue" as show the result of
"cat /proc/interrupts | grep mlx".
51: 0 0 0 0 0 0
0 0 0 0 0 0
PCI-MSI-X eth-mlx4-9
59: 0 0 0 0 0 0
0 0 0 0 0 0
PCI-MSI-X eth-mlx4-10
67: 0 0 0 0 0 0
0 0 0 0 0 0
PCI-MSI-X eth-mlx4-11
75: 0 0 0 0 0 0
0 0 0 0 0 0
PCI-MSI-X eth-mlx4-12
83: 223042 0 0 0 0 0
1091 0 0 0 0 0
PCI-MSI-X mlx4_core(async)
170: 72 39800564 17641698 80102 769072 103351470
0 0 0 0 0 17232132
PCI-MSI-X eth-mlx4-0
178: 0 0 0 0 0 0
0 0 0 0 0 0
PCI-MSI-X eth-mlx4-1
186: 0 0 0 0 0 0
0 0 0 0 0 0
PCI-MSI-X eth-mlx4-2
194: 0 0 0 0 0 0
0 0 0 0 0 0
PCI-MSI-X eth-mlx4-3
202: 0 0 0 0 0 0
0 0 0 0 0 0
PCI-MSI-X eth-mlx4-4
210: 0 0 0 0 0 0
0 0 0 0 0 0
PCI-MSI-X eth-mlx4-5
218: 0 0 0 0 0 0
0 0 0 0 0 0
PCI-MSI-X eth-mlx4-6
226: 0 0 0 0 0 0
0 0 0 0 0 0
PCI-MSI-X eth-mlx4-7
234: 0 0 0 0 0 0
0 0 0 0 0 0
PCI-MSI-X eth-mlx4-8
Thanks for the answer,
Best regards.
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