Re: [dpdk-users] TestPMD testing with VMX3NET Devices...

[Rami Rosen <roszenrami@gmail.com>]

Hi Jamie,
Can you run this with --log-level=8 -w 0000:0b:00.0 -w 0000:13:00.0
and post the results here?

(I mean like the following:
testpmd -l 1,2,3 -n 1 --log-level=8 -w 0000:0b:00.0 -w 0000:13:00.0 --
--disable-hw-vlan --forward-mode=mac
--eth-peer=0,00:00:00:00:33:33 --eth-peer=1,00:00:00:00:44:44 -i
--nb-cores=2 --rxq=8 --txq=8 --rxd=8192 --txd=8192)

 and also to be on the safe side, make sure that
in build/.config you have
CONFIG_RTE_LIBRTE_VMXNET3_PMD=y
(It should be so by default for dpdk-stable-17.11.4)

Regards,
Rami Rosen

On Thu, 6 Sep 2018 at 19:39, Jamie Fargen <jfargen@redhat.com> wrote:
>
> Hello-
>
> Would like to do some performance analysis using testpmd on a RHEL7 VMWare
> guest using a VMX3NET network devices. Similar tests have been performed
> using RHEL7 KVM guests using VirtIO network devices, but the same process
> does not work with VMX3NET network interfaces.
>
> The dpdk-stable-17.11 has been compiled and it looks like the devices are
> properly bound to the uio driver, but when testpmd is started it is unable
> to locate the devices.
>
> This is the basic process of how the uio module is loaded, the devices our
> bound to the driver, and testpmd is started.
>
> [root@redacted ~]# cat startTestPmd17.sh
> #!/bin/bash -x
> modprobe uio
> insmod /root/dpdk-stable-17.11.4/build/kmod/igb_uio.ko
> /root/dpdk-stable-17.11.4/usertools/dpdk-devbind.py -b igb_uio 0b:00.0
> /root/dpdk-stable-17.11.4/usertools/dpdk-devbind.py -b igb_uio 13:00.0
> mount -t hugetlbfs nodev /mnt/huge
> echo 1024 > /sys/devices/system/node/node0/hugepages/hugepages-
> 2048kB/nr_hugepages
> testpmd -l 1,2,3 -n 1 -- --disable-hw-vlan --forward-mode=mac
> --eth-peer=0,00:00:00:00:33:33 --eth-peer=1,00:00:00:00:44:44 -i
> --nb-cores=2 --rxq=8 --txq=8 --rxd=8192 --txd=8192
>
> EAL: Detected 4 lcore(s)
> EAL: No free hugepages reported in hugepages-1048576kB
> EAL: Probing VFIO support...
> EAL: No probed ethernet devices
> Set mac packet forwarding mode
> Interactive-mode selected
> USER1: create a new mbuf pool <mbuf_pool_socket_0>: n=163456, size=2176,
> socket=0
> Done
> testpmd>
>
>
> There are network devices bound to DPDK-compatible uio driver.
> [root@redacted ~]# dpdk-stable-17.11.4/usertools/dpdk-devbind.py -s
>
> Network devices using DPDK-compatible driver
> ============================================
> 0000:0b:00.0 'VMXNET3 Ethernet Controller 07b0' drv=igb_uio unused=vmxnet3
> 0000:13:00.0 'VMXNET3 Ethernet Controller 07b0' drv=igb_uio unused=vmxnet3
>
> Network devices using kernel driver
> ===================================
> 0000:1b:00.0 'VMXNET3 Ethernet Controller 07b0' if=ens256 drv=vmxnet3
> unused=igb_uio *Active*
>
>
> If anyone has any spare cycles to help me solve this issue it would be
> greatly appreciated.
>
>
> --
> Jamie Fargen
> Senior Consultant
> jfargen@redhat.com
> 813-817-4430