On 2015-10-24, at 10:32, Jack Vogel <jfvo...@gmail.com> wrote: > 13 on a 40G interface?? I don't think that's very good for Linux either, is > this a 4x10 adapter?
No, its's a 2x40. And I can get it into the high 30s with tuning. I just mentioned the value to illustrate that something seems to be seriously broken under FreeBSD. Lars > 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"
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