[dpdk-users] VF RSS availble in I350-T2?
..
hyperhead at gmail.com
Wed Dec 13 13:24:28 CET 2017
Hi Paul,
No I didn't spot that.
I guess my only option now is 10gb card that supports it.
Thanks.
On Wed, 13 Dec 2017, 12:35 Paul Emmerich, <emmericp at net.in.tum.de> wrote:
> Did you consult the datasheet? It says that the VF only supports one queue.
>
> Paul
>
> > Am 12.12.2017 um 13:58 schrieb .. <hyperhead at gmail.com>:
> >
> > I assume my message was ignored due to it not being related to dpdk
> > software?
> >
> >
> > On 11 December 2017 at 10:14, .. <hyperhead at gmail.com> wrote:
> >
> >> Hi,
> >>
> >> I have an intel I350-T2 which I use for SR-IOV, however, I am hitting
> some
> >> rx_dropped on the card when I start increasing traffic. (I have got more
> >> with the same software out of a identical bare metal system)
> >>
> >> I am using the Intel igb driver on Centos 7.2 (downloaded from Intel not
> >> the driver installed with Centos), so the RSS parameters amongst others
> are
> >> availbe to me
> >>
> >> This then led me to investigate the interrupts on the tx rx ring buffers
> >> and I noticed that the interface (vfs enabled) only had on tx/rx queue.
> Its
> >> distributed between This is on the KVM Host
> >>
> >> CPU0 CPU1 CPU2 CPU3 CPU4
> >> CPU5 CPU6 CPU7 CPU8
> >> 100: 1 33 137 0 0
> >> 0 0 0 0 IR-PCI-MSI-edge ens2f1
> >> 101: 2224 0 0 6309 178807
> >> 0 0 0 0 IR-PCI-MSI-edge
> ens2f1-TxRx-0
> >>
> >> Looking at my standard nic ethernet ports I see 1 rx and 4 rx queues
> >>
> >> On the VM I only get one tx one rx queue ( I know all the interrupts are
> >> only using CPU0) but that is defined in our builds.
> >>
> >> egrep "CPU|ens11" /proc/interrupts
> >> CPU0 CPU1 CPU2 CPU3 CPU4
> >> CPU5 CPU6 CPU7
> >> 34: 715885552 0 0 0 0
> >> 0 0 0 0 PCI-MSI-edge
> ens11-tx-0
> >> 35: 559402399 0 0 0 0
> >> 0 0 0 0 PCI-MSI-edge
> ens11-rx-0
> >>
> >> I activated RSS in my card, and can set if, however if I use the param
> >> max_vfs=n then it defaults back to to 1 rx 1 tx queue per nic port
> >>
> >> [ 392.833410] igb 0000:07:00.0: Using MSI-X interrupts. 1 rx queue(s),
> 1
> >> tx queue(s)
> >> [ 393.035408] igb 0000:07:00.1: Using MSI-X interrupts. 1 rx queue(s),
> 1
> >> tx queue(s)
> >>
> >> I have been reading some of the dpdk older posts and see that VF RSS is
> >> implemented in some cards, does anybody know if its available in this
> card
> >> (from reading it only seemed the 10GB cards)
> >>
> >> One of my plans aside from trying to create more RSS per VM is to add
> more
> >> CPUS to the VM that are not isolated so that the rx and tx queues can
> >> distribute their load a bit to see if this helps.
> >>
> >> Also is it worth investigating the VMDq options, however I understand
> this
> >> to be less useful than SR-IOV which works well for me with KVM.
> >>
> >>
> >> Thanks in advance,
> >>
> >> Rolando
> >>
>
> --
> Chair of Network Architectures and Services
> Department of Informatics
> Technical University of Munich
> Boltzmannstr. 3
> 85748 Garching bei München, Germany
>
>
>
>
>
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