ixl 40G bad performance?

[Eggert, Lars]

On 2015-10-23, at 23:36, Eric Joyner <erj at 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

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