[dpdk-users] Support for RSS UDP hash types on vmxnet3

[dpdk-users] Support for RSS UDP hash types on vmxnet3

[madhukar mythri]

Hi,

As per the documentation of "Poll Mode Driver for Paravirtual vmxnet3 NIC"
in NIC driver guides.

vmxnet3 Features and Limitations of VMXNET3 PMD are as follows:
-----------------------
RSS based load balancing between queues - SUPPORTED
------------------------

But, i'm seeing all the UDP packets are landing on only single queue, even
after enabling RSS.

Does anybody faced similar issue and any fix available on this issue ?

Thanks,
Madhukar.

Re: [dpdk-users] Support for RSS UDP hash types on vmxnet3

[Eduard Serra Miralles]

6.5 and prior requires to set a specific flag on VM vmx file to enable RSS, apart from requesting it inside:



// On vmx file

ethernet1.udpRSS = “1”



6.7 and onwards, with newer virtual hw version, the guest will handle that on its own with no required intervention from the hypervisor.



________________________________
From: users <users-bounces@dpdk.org> on behalf of madhukar mythri <madhukar.mythri@gmail.com>
Sent: Monday, April 1, 2019 7:21:11 AM
To: users@dpdk.org
Subject: [dpdk-users] Support for RSS UDP hash types on vmxnet3

Hi,

As per the documentation of "Poll Mode Driver for Paravirtual vmxnet3 NIC"
in NIC driver guides.

vmxnet3 Features and Limitations of VMXNET3 PMD are as follows:
-----------------------
RSS based load balancing between queues - SUPPORTED
------------------------

But, i'm seeing all the UDP packets are landing on only single queue, even
after enabling RSS.

Does anybody faced similar issue and any fix available on this issue ?

Thanks,
Madhukar.

Re: [dpdk-users] Support for RSS UDP hash types on vmxnet3

[madhukar mythri]

Hi Eduard,

Thanks very much for the suggestion, now with "ethernetX.usdpRSS=1"(in vmx
file) RSS working well on my guest VM (with vmxnet3 PMD of DPDK-17.11).
i'm using ESXi-6.7 update-1, but, by default RSS did not worked. By
enabling the above suggested option only, i could see the UDP packets were
load-balancing very well on multi-queues.

On top of this, for better performance do we need to enable any more extra
flags in "vmx" file ?

Thanks,
Madhukar.



On Tue, Apr 2, 2019 at 12:09 AM Eduard Serra Miralles <eserra@vmware.com>
wrote:

> 6.5 and prior requires to set a specific flag on VM vmx file to enable
> RSS, apart from requesting it inside:
>
>
>
> // On vmx file
>
> ethernet1.udpRSS = “1”
>
>
>
> 6.7 and onwards, with newer virtual hw version, the guest will handle that
> on its own with no required intervention from the hypervisor.
>
>
> ------------------------------
> *From:* users <users-bounces@dpdk.org> on behalf of madhukar mythri <
> madhukar.mythri@gmail.com>
> *Sent:* Monday, April 1, 2019 7:21:11 AM
> *To:* users@dpdk.org
> *Subject:* [dpdk-users] Support for RSS UDP hash types on vmxnet3
>
> Hi,
>
> As per the documentation of "Poll Mode Driver for Paravirtual vmxnet3 NIC"
> in NIC driver guides.
>
> vmxnet3 Features and Limitations of VMXNET3 PMD are as follows:
> -----------------------
> RSS based load balancing between queues - SUPPORTED
> ------------------------
>
> But, i'm seeing all the UDP packets are landing on only single queue, even
> after enabling RSS.
>
> Does anybody faced similar issue and any fix available on this issue ?
>
> Thanks,
> Madhukar.
>

Re: [dpdk-users] Support for RSS UDP hash types on vmxnet3

[madhukar mythri]

Hi,

This "ethernetX.udpRSS" flag works well in ESXi-6.7 for UDP packets. But
the same flag not working in ESXi-6.5, does any additional settings
required to work UDP RSS ?
Or, does this flag introduced in 6.7 only.

Thanks,
Madhukar.

On Tue, Apr 2, 2019 at 12:09 AM Eduard Serra Miralles <eserra@vmware.com>
wrote:

> 6.5 and prior requires to set a specific flag on VM vmx file to enable
> RSS, apart from requesting it inside:
>
>
>
> // On vmx file
>
> ethernet1.udpRSS = “1”
>
>
>
> 6.7 and onwards, with newer virtual hw version, the guest will handle that
> on its own with no required intervention from the hypervisor.
>
>
> ------------------------------
> *From:* users <users-bounces@dpdk.org> on behalf of madhukar mythri <
> madhukar.mythri@gmail.com>
> *Sent:* Monday, April 1, 2019 7:21:11 AM
> *To:* users@dpdk.org
> *Subject:* [dpdk-users] Support for RSS UDP hash types on vmxnet3
>
> Hi,
>
> As per the documentation of "Poll Mode Driver for Paravirtual vmxnet3 NIC"
> in NIC driver guides.
>
> vmxnet3 Features and Limitations of VMXNET3 PMD are as follows:
> -----------------------
> RSS based load balancing between queues - SUPPORTED
> ------------------------
>
> But, i'm seeing all the UDP packets are landing on only single queue, even
> after enabling RSS.
>
> Does anybody faced similar issue and any fix available on this issue ?
>
> Thanks,
> Madhukar.
>