-----Original Message----- From: owner-freebsd-...@freebsd.org [mailto:owner-freebsd-...@freebsd.org] On Behalf Of Eggert, Lars Sent: Monday, October 26, 2015 2:28 AM To: Kevin Oberman <rkober...@gmail.com> Cc: freebsd-net@freebsd.org; Daniel Engberg <daniel.engberg.li...@pyret.net> Subject: Re: ixl 40G bad performance?
On 2015-10-26, at 4:38, Kevin Oberman <rkober...@gmail.com> wrote: > On Sun, Oct 25, 2015 at 12:10 AM, Daniel Engberg < > daniel.engberg.li...@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 With the latest ixl component from: https://downloadcenter.intel.com/download/25160/Network-Adapter-Driver-for-PCI-E-40-Gigabit-Network-Connections-under-FreeBSD- running on 10.2 amd64, I easily get 9.6 Gb/s with one netperf stream, either b2b or through a switch. This is with no driver/kernel tuning. Running 4 streams easily gets me 36 GB/s. Jeff _______________________________________________ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
