> On Aug 17, 2015, at 1:41 PM, Christopher Forgeron <csforgeron at
gmail.com> wrote:
>
> FYI, I can regularly hit 9.3 Gib/s with my Intel X520-DA2's and FreeBSD
10.1. Before 10.1 it was less.
>
this is NOT iperf/3 where i do get close to wire speed,
it?s NFS writes, i.e., almost real work :-)
> I used to tweak the card settings, but now it's just stock. You may
want to check your settings, the Mellanox may just have better defaults for your
switch.
>
> On Mon, Aug 17, 2015 at 6:41 AM, Slawa Olhovchenkov <slw at zxy.spb.ru
<mailto:slw at zxy.spb.ru>> wrote:
> On Mon, Aug 17, 2015 at 10:27:41AM +0300, Daniel Braniss wrote:
>
> > hi,
> > I have a host (Dell R730) with both cards, connected to an
HP8200 switch at 10Gb.
> > when writing to the same storage (netapp) this is what I get:
> > ix0: ~130MGB/s
> > mlxen0 ~330MGB/s
> > this is via nfs/tcpv3
> >
> > I can get similar (bad) performance with the mellanox if I
increase the file size
> > to 512MGB.
>
> Look like mellanox have internal beffer for caching and do ACK acclerating.
>
> > so at face value, it seems the mlxen does a better use of
resources than the intel.
> > Any ideas how to improve ix/intel's performance?
>
> Are you sure about netapp performance?
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