Re: ixg(4) performances

[Matthias Drochner <M.Drochner%fz-juelich.de@localhost>]

On Fri, 29 Aug 2014 15:51:14 +0000
Emmanuel Dreyfus <manu%netbsd.org@localhost> wrote:
> I found this, but the result does not make sense: negociated > max ...
>
> Link Capabilities Ragister (0xAC): 0x00027482
> bits 3:0   Supprted Link speed:  0010 = 5 GbE and 2.5 GbE speed
> supported bits 9:4   Max link width: 001000 = x4

Wrong -- this means x8.

> bits 14:12 L0s exit lattency: 101 = 1 µs - 2 µs
> bits 17:15 L1 Exit lattency: 011 = 4 µs - 8 µs
>
> Link Status Register (0xB2): 0x1081
> bits 3:0   Current Link speed:  0001 = 2.5 GbE PCIe link
> bits 9:4   Negociated link width: 001000 = x8

So it makes sense.

best regards
Matthias


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