[dpdk-users] dpdk in AWS

[dpdk-users] dpdk in AWS

[amit sehas]

I am utilizing dpdk between EC2 instances in AWS. I am noticing that the first few times packets are sent from one instance to
another, they are always dropped ( i think at the source). The steps i took to utilize the dpdk ports are as follows:

modprobe uio
modprobe hwmon
insmod ./x86_64-native-linuxapp-gcc/kmod/rte_kni.ko
insmod ./x86_64-native-linuxapp-gcc/kmod/igb_uio.ko

ifconfig eth1 down

./usertools/dpdk-devbind.py --bind=igb_uio 00:04.0

Is there an explanation of why only the first few packets would be dropped and there after the communication moves
along smoothly without any issues at all ? The behavior is consistent. I am a new user of dpdk so i am completely lost
about the behavior ...

Do i have to configure something with ethtool?

Any help is greatly appreciated ...

thanks

Re: [dpdk-users] dpdk in AWS

[Michael Barker]

Have tried with the vfio driver instead?  I've used that on AWS fairly
recently and noticed no packet loss.

On Thu, 19 Nov 2020 at 16:24, amit sehas <cun23@yahoo.com> wrote:

> I am utilizing dpdk between EC2 instances in AWS. I am noticing that the
> first few times packets are sent from one instance to
> another, they are always dropped ( i think at the source). The steps i
> took to utilize the dpdk ports are as follows:
>
> modprobe uio
> modprobe hwmon
> insmod ./x86_64-native-linuxapp-gcc/kmod/rte_kni.ko
> insmod ./x86_64-native-linuxapp-gcc/kmod/igb_uio.ko
>
> ifconfig eth1 down
>
> ./usertools/dpdk-devbind.py --bind=igb_uio 00:04.0
>
> Is there an explanation of why only the first few packets would be dropped
> and there after the communication moves
> along smoothly without any issues at all ? The behavior is consistent. I
> am a new user of dpdk so i am completely lost
> about the behavior ...
>
> Do i have to configure something with ethtool?
>
> Any help is greatly appreciated ...
>
> thanks
>