ixl 40G bad performance?

[Eggert, Lars]

On 2015-10-26, at 4:38, Kevin Oberman <rkoberman at gmail.com> wrote:
> On Sun, Oct 25, 2015 at 12:10 AM, Daniel Engberg <
> daniel.engberg.lists at pyret.net> wrote:
> 
>> One thing I've noticed that probably affects your performance benchmarks
>> somewhat is that you're using iperf(2) instead of the newer iperf3 but I
>> could be wrong...
> 
> iperf3 is not a newer version of iperf. It is a total re-write and a rather
> different tool. It has significant improvements in many areas and new
> capabilities that might be of use. That said, there is no reason to think
> that the results of tests using iperf2 are in any way inaccurate. However,
> it is entirely possible to get misleading results if options not properly
> selected.

FWIW, I've been using netperf and tried various options.

I don't think the issues is the benchmarking tool. I think the issue is TSO/LRO issues (per my earlier email.)

Lars

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 273 bytes
Desc: Message signed with OpenPGP using GPGMail
URL: <http://lists.freebsd.org/pipermail/freebsd-net/attachments/20151026/a0ec5ef4/attachment.bin>