> On May 29, 2018, at 11:12 AM, Giridharan, Ganesan <[email protected]>
> wrote:
>
> Good morning. Would like to know some numbers, especially PPS, using TAP
> device and TAP PMD combo to fetch packets to DPDK application. Wondering do
> those numbers change as Hypervisor platforms change? Assuming the resources
> (vCpu & memory) are unchanged across platforms. Mainly interested in PPS
> measured on ESXi/KVM/Hyper-V platforms.
I have never run TAP PMD in ESXi/KVM/Hyper-V so I do not know the numbers. The
performance of the DPDK TAP PMD is not going to be much better then any other
design using tun/tap as the kernel is still involved in the movement of data.
The TAP PMD was created to allow me to test applications with DPDK on a system
without real NICs like my MACBook Pro I have a port of DPDK for a MAC. The TAP
interface should only be used for testing or if you need connectivity to the
host/another TAP device. With Pktgen I use it to connect to wireshark to decode
packets.
>
> Appreciate the share if anyone might possess test results.
>
> Thanks
>
> Great day
> --GG
Regards,
Keith
