NFS on 10G interface terribly slow

[Olivier Cochard-Labbé]

On Mon, Jun 29, 2015 at 9:19 AM, Gerrit Kühn <gerrit.kuehn at aei.mpg.de>
wrote:

> On Fri, 26 Jun 2015 20:42:08 -0400 (EDT) Rick Macklem
> <rmacklem at uoguelph.ca> wrote about Re: NFS on 10G interface terribly slow:
>
> RM> Btw, can you tell us what Intel chip(s) you're using?
>
> I have
>
> ix0 at pci0:5:0:0: class=0x020000 card=0x00028086 chip=0x15288086 rev=0x01
> hdr=0x00 vendor     = 'Intel Corporation'
>     device     = 'Ethernet Controller 10-Gigabit X540-AT2'
>     class      = network
>     subclass   = ethernet
>
> RM> For example, from the "ix" driver:
> RM> #define IXGBE_82598_SCATTER         100
> RM> #define IXGBE_82599_SCATTER         32
>
> Hm, I cannot find out into which chipset number this translates for my
> device...
>
>
​extract first 4 numbers of "chip", then try a grep:​
​grep 1528 /usr/src/sys/dev/ixgbe/*
/usr/src/sys/dev/ixgbe/ixgbe_type.h:#define
IXGBE_DEV_ID_X540T                      0x1528

=> Then your chipset is X540