Hi! all
I use 82599EN with 10Gbps SFP module. I measre through put and the result is 1.3Gbps.
I would like to improve through put, so I would like to use MSI-X.
I enter "insmod ixgbe.ko IntMode=2". The result is below,
This driver fail to start because of "Failed to allocate MSI-X interrupts. Err: -28".
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~# insmod ixgbe.ko IntMode=2
Intel(R) 10 Gigabit PCI Express Network Driver - version 4.3.15
Copyright (c) 1999-2015 Intel Corporation.
ixgbe: Interrupt Mode set to 2
ixgbe 0000:01:00.0: Failed to allocate MSI-X interrupts. Err: -28
ixgbe 0000:01:00.0: Disabling VMQd support
ixgbe 0000:01:00.0: Disabling RSS support
ixgbe 0000:01:00.0: PCI Express bandwidth of 16GT/s available
ixgbe 0000:01:00.0: (Speed:5.0GT/s, Width: x4, Encoding Loss:20%)
ixgbe 0000:01:00.0 eth2: MAC: 2, PHY: 15, SFP+: 5, PBA No: FFFFFF-0FF
ixgbe 0000:01:00.0: 00:a0:c9:12:34:56
ixgbe 0000:01:00.0 eth2: Enabled Features: RxQ: 1 TxQ: 1
ixgbe 0000:01:00.0 eth2: Intel(R) 10 Gigabit Network Connection
platform leds.7: Driver leds-gpio requests probe deferral
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Could you tell the reason which occurs "Failed to allocate MSI-X interrupts. Err: -28" ?
BR,
Taira