ixl 40G bad performance?

[Jack Vogel]

The 40G hardware is absolutely dependent on firmware, if you have a mismatch
for instance, it can totally bork things. So, I would work with your Intel
rep and be
sure you have the correct version for your specific hardware.

Good luck,

Jack


On Wed, Oct 21, 2015 at 5:25 AM, Eggert, Lars <lars at netapp.com> wrote:

> Hi Bruce,
>
> thanks for the very detailed analysis of the ixl sysctls!
>
> On 2015-10-20, at 16:51, Bruce Evans <brde at optusnet.com.au> wrote:
> >
> > Lowering (improving) latency always lowers (unimproves) throughput by
> > increasing load.
>
> That, I also understand. But even when I back off the itr values to
> something more reasonable, throughput still remains low.
>
> With all the tweaking I have tried, I have yet to top 3 Gb/s with ixl
> cards, whereas they do ~13 Gb/s on Linux straight out of the box.
>
> Lars
>