13 on a 40G interface?? I don't think that's very good for Linux either, is this a 4x10 adapter? Maybe elaborating on the details of the hardware, you sure you don't have a bad PCI slot somewhere that might be throttling everything?
Cheers, Jack On Sat, Oct 24, 2015 at 12:43 AM, Eggert, Lars <l...@netapp.com> wrote: > On 2015-10-23, at 23:36, Eric Joyner <e...@freebsd.org> wrote: > > I see that the sysctl does clobber the global value, but have you tried > lowering the interval / raising the rate? You could try something like > 10usecs, and see if that helps. We'll do some more investigation here -- > 3Gb/s on a 40Gb/s using default settings is terrible, and we shouldn't let > that be happening. > > > I played with different settings, but I've never been able to get more > than 4Gb/s, whereas under Linux 4.2 without any special settings I get 13. > > See my other email on TSO/LRO not looking to be effective; that would > certainly explain it. Plausible? Anything to try here? > > Lars > > _______________________________________________ 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"