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Date:      Wed, 11 Jul 2018 14:58:23 +0000
From:      "Eggert, Lars" <lars@netapp.com>
To:        "np@FreeBSD.org" <np@FreeBSD.org>
Cc:        "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, Giuseppe Lettieri <g.lettieri@iet.unipi.it>
Subject:   Re: netmap & chelsio
Message-ID:  <30D2A259-6B2E-44CA-969D-F51F4D929DDE@netapp.com>
In-Reply-To: <20180706071739.GA13401@ox>
References:  <94019926-B14F-47AB-8AD9-C01B4A0E199F@netapp.com> <20180705154710.GA3353@ox> <0199F257-F9D2-41D0-B4F9-26FBA1607F61@netapp.com> <20180706071739.GA13401@ox>

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Hi,

I have netmap working with the T6 cards now.

However, performance is very poor. It seems to take several milliseconds =
after a NIOCTXSYNC ioctl before the tail is updated?

In case it matters, here is what is in loader.conf:

hw.cxgbe.num_vis=3D2
hw.cxgbe.fl_pktshift=3D0
hw.cxgbe.ntxq=3D1
hw.cxgbe.nrxq=3D1
hw.cxgbe.qsize_txq=3D512
hw.cxgbe.qsize_rxq=3D512
hw.cxgbe.cong_drop=3D1
hw.cxgbe.pause_settings=3D1
hw.cxgbe.autoneg=3D0
hw.cxgbe.nm_rx_nframes=3D1
hw.cxgbe.nm_rx_ndesc=3D1

Lars

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