* [dpdk-users] Performance issue with 82546EB NICs
@ 2016-08-19 0:53 Đỗ Hoàng
2016-08-19 18:06 ` Stephen Hemminger
0 siblings, 1 reply; 2+ messages in thread
From: Đỗ Hoàng @ 2016-08-19 0:53 UTC (permalink / raw)
To: users
Hi all,
I am using a dual-port Intel 82546EB to run the simple l2fwd application
(forward 64byte packets).
The result is terrible. My packet generator generates and sends about
320Mb/s, but nearly a half of them are dropped, and only about 160Mb of
packets are forwarded every sec.
I have also tried to run dpdk-pktgen with this NIC and It can only generate
and send about 150Mb/s.
My NIC link speed is 1000Mb/s. I am wondering why its performance is so
slow like this.
Please help me. Any ideas/advices are appreciated.
Thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [dpdk-users] Performance issue with 82546EB NICs
2016-08-19 0:53 [dpdk-users] Performance issue with 82546EB NICs Đỗ Hoàng
@ 2016-08-19 18:06 ` Stephen Hemminger
0 siblings, 0 replies; 2+ messages in thread
From: Stephen Hemminger @ 2016-08-19 18:06 UTC (permalink / raw)
To: Đỗ Hoàng; +Cc: users
On Fri, 19 Aug 2016 08:53:12 +0800
Đỗ Hoàng <mon120494@gmail.com> wrote:
> Hi all,
>
> I am using a dual-port Intel 82546EB to run the simple l2fwd application
> (forward 64byte packets).
>
> The result is terrible. My packet generator generates and sends about
> 320Mb/s, but nearly a half of them are dropped, and only about 160Mb of
> packets are forwarded every sec.
>
> I have also tried to run dpdk-pktgen with this NIC and It can only generate
> and send about 150Mb/s.
>
> My NIC link speed is 1000Mb/s. I am wondering why its performance is so
> slow like this.
>
> Please help me. Any ideas/advices are appreciated.
>
> Thanks.
The first thing I would check is that ethernet flow control is disabled.
Unless you are running on very slow hardware, the DPDK can saturate a 10G
link with small packets.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2016-08-19 0:53 [dpdk-users] Performance issue with 82546EB NICs Đỗ Hoàng
2016-08-19 18:06 ` Stephen Hemminger
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