poor ipsec perfomance on hyper-v

[Dexuan Cui]

Hi Alexandr,
Sephe (in Cc) made some important improvement for the gateway case recently,
but the patches are only in 12-CURRENT for now. Can you please try this?

The patches will be backported to stable/10 in a few weeks.

Thanks,
-- Dexuan


> -----Original Message-----
> From: owner-freebsd-emulation at freebsd.org [mailto:owner-freebsd-
> emulation at freebsd.org] On Behalf Of Alexandr Krivulya
> Sent: Friday, November 18, 2016 05:05
> To: freebsd-emulation at freebsd.org
> Subject: poor ipsec perfomance on hyper-v
> 
> Hi!
> We have freebsd10.3 gateway running in our private hyper-v cloud
> (Windows Server 2012R2). Throughput of ipsec tunnel is very poor -
> ~3-5Mb/s sometimes slow down to few Kb/s with high cpu load and a lot of
> interrupts.Downloading over ftp is about 30-40Mb/s. Disabling tso,rxcsum
> and txcsum on hn interfaces do nothing.