[dpdk-users] How to disable flow control?

[dpdk-users] How to disable flow control?

[Đỗ Hoàng]

Hi there,

I'm running DPDK with a dual-port 82546EB NIC, but the performance is
really low (about 150Mbit/s).
Somebody told me that I should disable flow control and try again, but I
don't know how to do it.
So, I have 2 questions:
- How to disable flow control?
- If the performance doesn't get better after disabling flow control, what
should I do next?

Any advice and suggestions will be greatly appreciated.

Thanks in advance!

Re: [dpdk-users] How to disable flow control?

[Đỗ Hoàng]

I have checked again, FC is disabled by default (I'm running the l2fwd
example).
So what's the problem with my NIC speed?

On Tue, Aug 30, 2016 at 9:54 AM, Đỗ Hoàng <mon120494@gmail.com> wrote:

> Hi there,
>
> I'm running DPDK with a dual-port 82546EB NIC, but the performance is
> really low (about 150Mbit/s).
> Somebody told me that I should disable flow control and try again, but I
> don't know how to do it.
> So, I have 2 questions:
> - How to disable flow control?
> - If the performance doesn't get better after disabling flow control, what
> should I do next?
>
> Any advice and suggestions will be greatly appreciated.
>
> Thanks in advance!
>

Re: [dpdk-users] How to disable flow control?

[Đỗ Hoàng]

Here is the Port statistics of l2fwd on my computer, almost half of the
packets are dropped

Port statistics ====================================
Statistics for port 0 ------------------------------
Packets sent:                      124
Packets received:             10000180
Packets dropped:                     0
Statistics for port 1 ------------------------------
Packets sent:                  5875606
Packets received:                  124
Packets dropped:               4124574
Aggregate statistics ===============================
Total packets sent:            5875730
Total packets received:       10000304
Total packets dropped:         4124574
====================================================


On Tue, Aug 30, 2016 at 10:08 AM, Đỗ Hoàng <mon120494@gmail.com> wrote:

> I have checked again, FC is disabled by default (I'm running the l2fwd
> example).
> So what's the problem with my NIC speed?
>
> On Tue, Aug 30, 2016 at 9:54 AM, Đỗ Hoàng <mon120494@gmail.com> wrote:
>
>> Hi there,
>>
>> I'm running DPDK with a dual-port 82546EB NIC, but the performance is
>> really low (about 150Mbit/s).
>> Somebody told me that I should disable flow control and try again, but I
>> don't know how to do it.
>> So, I have 2 questions:
>> - How to disable flow control?
>> - If the performance doesn't get better after disabling flow control,
>> what should I do next?
>>
>> Any advice and suggestions will be greatly appreciated.
>>
>> Thanks in advance!
>>
>
>

Re: [dpdk-users] How to disable flow control?

[Muhammad Zain-ul-Abideen]

Hey, can you provide me with the port conf