[dpdk-users] [ConnectX-5 MCX515A-CCAT / MCX516A-CCAT] Can only generate 53Gb/s with 64B packets

[dpdk-users] [ConnectX-5 MCX515A-CCAT / MCX516A-CCAT] Can only generate 53Gb/s with 64B packets

[Yan Lei]

Hi, I am currently struggling in getting more than 53Gb/s with 64B packets on both of the MCX515A-CCAT and MCX516A-CCAT adapter when running a DPDK app that generates and transmits packets. WIth 256B packets I can get 98Gb/s.

Has anyone saw the same performance on these NICs? I checked the perf. report on https://core.dpdk.org/perf-reports/ but there are no numbers of these NICs.



Is this inherent limitation of these NICs (only reach 100Gb/s with larger packets)? If not, which firmware/driver/DPDK/system configurations could I tune to get 100Gb/s with 64B packets? My setup is as following: - CPU: E5-2697 v3 (14 cores, SMT disabled, CPU frequency fixed @ 2.6 GHz) - NIC: Mellanox MCX515A-CCAT / MCX516A-CCAT (Using only one port for TX, installed on PCIe Gen3 x16) - DPDK: 19.05 - RDMA-CORE: v28.0 - Kernel: 5.3.0 - OS: Ubuntu 18.04 - Firmware: 16.26.1040 I measured the TX rate with DPDK's testpmd: $ ./testpmd -l 3-13 -n 4 -w 02:00.0 -- -i --port-topology=chained --nb-ports=1 --rxq=10 --txq=10 --nb-cores=10 --burst=128 --rxd=512 --txd=512 --mbcache=512 --forward-mode=txonly So 10 cores generating and transmits 64B packets on 10 NIC queues. Your feedbacks will be much appreciated.

Thanks, Lei

Re: [dpdk-users] [ConnectX-5 MCX515A-CCAT / MCX516A-CCAT] Can only generate 53Gb/s with 64B packets

[Yan Lei]

The previous Email has format problem, sorry for that updated version below!

Hi,

I am currently struggling in getting more than 53Gb/s with 64B packets on both of the MCX515A-CCAT and MCX516A-CCAT adapter when running a DPDK app that generates and transmits packets. With 256B packets I can get 98Gb/s.

Has anyone saw the same performance on these NICs? I checked the perf. report on https://core.dpdk.org/perf-reports/ but there are no numbers of these NICs.

Is this inherent limitation of these NICs (only reach 100Gb/s with larger packets)? If not, which firmware/driver/DPDK/system configurations could I tune to get 100Gb/s with 64B packets?

My setup is as following:

- CPU: E5-2697 v3 (14 cores, SMT disabled, CPU frequency fixed @ 2.6 GHz)
- NIC: Mellanox MCX515A-CCAT / MCX516A-CCAT (Using only one port for TX, installed on PCIe Gen3 x16)
- DPDK: 19.05
- RDMA-CORE: v28.0
- Kernel: 5.3.0
- OS: Ubuntu 18.04
- Firmware: 16.26.1040

I measured the TX rate with DPDK's testpmd:

$ ./testpmd -l 3-13 -n 4 -w 02:00.0 -- -i --port-topology=chained --nb-ports=1 --rxq=10 --txq=10 --nb-cores=10 --burst=128 --rxd=512 --txd=512 --mbcache=512 --forward-mode=txonly So 10 cores generating and transmits 64B packets on 10 NIC queues.

Your feedbacks will be much appreciated.

Thanks,
Lei


________________________________
From: users <users-bounces@dpdk.org> on behalf of Yan Lei <l.yan@epfl.ch>
Sent: Thursday, March 12, 2020 12:40:03 AM
To: users@dpdk.org
Subject: [dpdk-users] [ConnectX-5 MCX515A-CCAT / MCX516A-CCAT] Can only generate 53Gb/s with 64B packets

Hi, I am currently struggling in getting more than 53Gb/s with 64B packets on both of the MCX515A-CCAT and MCX516A-CCAT adapter when running a DPDK app that generates and transmits packets. WIth 256B packets I can get 98Gb/s.

Has anyone saw the same performance on these NICs? I checked the perf. report on https://core.dpdk.org/perf-reports/ but there are no numbers of these NICs.



Is this inherent limitation of these NICs (only reach 100Gb/s with larger packets)? If not, which firmware/driver/DPDK/system configurations could I tune to get 100Gb/s with 64B packets? My setup is as following: - CPU: E5-2697 v3 (14 cores, SMT disabled, CPU frequency fixed @ 2.6 GHz) - NIC: Mellanox MCX515A-CCAT / MCX516A-CCAT (Using only one port for TX, installed on PCIe Gen3 x16) - DPDK: 19.05 - RDMA-CORE: v28.0 - Kernel: 5.3.0 - OS: Ubuntu 18.04 - Firmware: 16.26.1040 I measured the TX rate with DPDK's testpmd: $ ./testpmd -l 3-13 -n 4 -w 02:00.0 -- -i --port-topology=chained --nb-ports=1 --rxq=10 --txq=10 --nb-cores=10 --burst=128 --rxd=512 --txd=512 --mbcache=512 --forward-mode=txonly So 10 cores generating and transmits 64B packets on 10 NIC queues. Your feedbacks will be much appreciated.

Thanks, Lei

Re: [dpdk-users] [ConnectX-5 MCX515A-CCAT / MCX516A-CCAT] Can only generate 53Gb/s with 64B packets

[sachin gupta]

 Hi Lei,
The smaller the Packet size, the more the number of Packets per second. I believe this is the inherent problem in all systems, even the ones which have proprietary hardware. 
In general applications which uses such small packets are rare and you will see a mix of traffic in the system.
RegardsSachin

On Thursday, March 12, 2020, 5:10:14 AM GMT+5:30, Yan Lei <l.yan@epfl.ch> wrote:  
 
 Hi, I am currently struggling in getting more than 53Gb/s with 64B packets on both of the MCX515A-CCAT and MCX516A-CCAT adapter when running a DPDK app that generates and transmits packets. WIth 256B packets I can get 98Gb/s.

Has anyone saw the same performance on these NICs? I checked the perf. report on https://core.dpdk.org/perf-reports/ but there are no numbers of these NICs.



Is this inherent limitation of these NICs (only reach 100Gb/s with larger packets)? If not, which firmware/driver/DPDK/system configurations could I tune to get 100Gb/s with 64B packets? My setup is as following: - CPU: E5-2697 v3 (14 cores, SMT disabled, CPU frequency fixed @ 2.6 GHz) - NIC: Mellanox MCX515A-CCAT / MCX516A-CCAT (Using only one port for TX, installed on PCIe Gen3 x16) - DPDK: 19.05 - RDMA-CORE: v28.0 - Kernel: 5.3.0 - OS: Ubuntu 18.04 - Firmware: 16.26.1040 I measured the TX rate with DPDK's testpmd: $ ./testpmd -l 3-13 -n 4 -w 02:00.0 -- -i --port-topology=chained --nb-ports=1 --rxq=10 --txq=10 --nb-cores=10 --burst=128 --rxd=512 --txd=512 --mbcache=512 --forward-mode=txonly So 10 cores generating and transmits 64B packets on 10 NIC queues. Your feedbacks will be much appreciated.

Thanks, Lei  

Re: [dpdk-users] [ConnectX-5 MCX515A-CCAT / MCX516A-CCAT] Can only generate 53Gb/s with 64B packets

[Yan Lei]

Hi Sachin,

Thanks a lot for the answer. The issue is resolved, was able to get 98Gb/s with 64B packets after set pci maxReadRequest to 1024 and turn off NIC flow control. These optimization settings are actually posted in the mlx5 PMD guide, my bad to have ignored them...

Cheers,
Lei
________________________________
From: sachin gupta <sachingg@yahoo.com>
Sent: Thursday, March 12, 2020 7:45:31 AM
To: users@dpdk.org; Yan Lei
Subject: Re: [dpdk-users] [ConnectX-5 MCX515A-CCAT / MCX516A-CCAT] Can only generate 53Gb/s with 64B packets

Hi Lei,

The smaller the Packet size, the more the number of Packets per second. I believe this is the inherent problem in all systems, even the ones which have proprietary hardware.
In general applications which uses such small packets are rare and you will see a mix of traffic in the system.

Regards
Sachin

On Thursday, March 12, 2020, 5:10:14 AM GMT+5:30, Yan Lei <l.yan@epfl.ch> wrote:


Hi, I am currently struggling in getting more than 53Gb/s with 64B packets on both of the MCX515A-CCAT and MCX516A-CCAT adapter when running a DPDK app that generates and transmits packets. WIth 256B packets I can get 98Gb/s.

Has anyone saw the same performance on these NICs? I checked the perf. report on https://core.dpdk.org/perf-reports/ but there are no numbers of these NICs.



Is this inherent limitation of these NICs (only reach 100Gb/s with larger packets)? If not, which firmware/driver/DPDK/system configurations could I tune to get 100Gb/s with 64B packets? My setup is as following: - CPU: E5-2697 v3 (14 cores, SMT disabled, CPU frequency fixed @ 2.6 GHz) - NIC: Mellanox MCX515A-CCAT / MCX516A-CCAT (Using only one port for TX, installed on PCIe Gen3 x16) - DPDK: 19.05 - RDMA-CORE: v28.0 - Kernel: 5.3.0 - OS: Ubuntu 18.04 - Firmware: 16.26.1040 I measured the TX rate with DPDK's testpmd: $ ./testpmd -l 3-13 -n 4 -w 02:00.0 -- -i --port-topology=chained --nb-ports=1 --rxq=10 --txq=10 --nb-cores=10 --burst=128 --rxd=512 --txd=512 --mbcache=512 --forward-mode=txonly So 10 cores generating and transmits 64B packets on 10 NIC queues. Your feedbacks will be much appreciated.

Thanks, Lei

Re: [dpdk-users] [ConnectX-5 MCX515A-CCAT / MCX516A-CCAT] Can only generate 53Gb/s with 64B packets

[sachin gupta]

Cool YanThanks for letting me know as as well. Can you also let me know the link capacity 
Sachin 


Sent from Yahoo Mail for iPhone


On Sunday, March 15, 2020, 12:07 AM, Yan Lei <l.yan@epfl.ch> wrote:

#yiv6938110405 #yiv6938110405 -- P {margin-top:0;margin-bottom:0;}#yiv6938110405 Hi Sachin,

Thanks a lot for the answer. The issue is resolved, was able to get 98Gb/s with 64B packets after set pci maxReadRequest to 1024 and turn off NIC flow control. These optimization settings are actually posted in the mlx5 PMD guide, my bad to have ignored them...
Cheers,LeiFrom: sachin gupta <sachingg@yahoo.com>
Sent: Thursday, March 12, 2020 7:45:31 AM
To: users@dpdk.org; Yan Lei
Subject: Re: [dpdk-users] [ConnectX-5 MCX515A-CCAT / MCX516A-CCAT] Can only generate 53Gb/s with 64B packets Hi Lei,
The smaller the Packet size, the more the number of Packets per second. I believe this is the inherent problem in all systems, even the ones which have proprietary hardware.
In general applications which uses such small packets are rare and you will see a mix of traffic in the system.
RegardsSachin

On Thursday, March 12, 2020, 5:10:14 AM GMT+5:30, Yan Lei <l.yan@epfl.ch> wrote:

Hi, I am currently struggling in getting more than 53Gb/s with 64B packets on both of the MCX515A-CCAT and MCX516A-CCAT adapter when running a DPDK app that generates and transmits packets. WIth 256B packets I can get 98Gb/s.

Has anyone saw the same performance on these NICs? I checked the perf. report onhttps://core.dpdk.org/perf-reports/ but there are no numbers of these NICs.



Is this inherent limitation of these NICs (only reach 100Gb/s with larger packets)? If not, which firmware/driver/DPDK/system configurations could I tune to get 100Gb/s with 64B packets? My setup is as following: - CPU: E5-2697 v3 (14 cores, SMT disabled, CPU frequency fixed @ 2.6 GHz) - NIC: Mellanox MCX515A-CCAT / MCX516A-CCAT (Using only one port for TX, installed on PCIe Gen3 x16) - DPDK: 19.05 - RDMA-CORE: v28.0 - Kernel: 5.3.0 - OS: Ubuntu 18.04 - Firmware: 16.26.1040 I measured the TX rate with DPDK's testpmd: $ ./testpmd -l 3-13 -n 4 -w 02:00.0 -- -i --port-topology=chained --nb-ports=1 --rxq=10 --txq=10 --nb-cores=10 --burst=128 --rxd=512 --txd=512 --mbcache=512 --forward-mode=txonly So 10 cores generating and transmits 64B packets on 10 NIC queues. Your feedbacks will be much appreciated.

Thanks, Lei

Re: [dpdk-users] [ConnectX-5 MCX515A-CCAT / MCX516A-CCAT] Can only generate 53Gb/s with 64B packets

[Yan Lei]

Hi Sachin,


By link capacity do you mean the bandwidth of the NIC port? If so, the link capacity is 100Gb/s.


Cheers,

Lei

________________________________
From: sachin gupta <sachingg@yahoo.com>
Sent: Monday, March 16, 2020 8:44:53 AM
To: Yan Lei; users@dpdk.org
Subject: Re: [dpdk-users] [ConnectX-5 MCX515A-CCAT / MCX516A-CCAT] Can only generate 53Gb/s with 64B packets

Cool Yan
Thanks for letting me know as as well. Can you also let me know the link capacity

Sachin


Sent from Yahoo Mail for iPhone<https://overview.mail.yahoo.com/?.src=iOS>


On Sunday, March 15, 2020, 12:07 AM, Yan Lei <l.yan@epfl.ch> wrote:

Hi Sachin,

Thanks a lot for the answer. The issue is resolved, was able to get 98Gb/s with 64B packets after set pci maxReadRequest to 1024 and turn off NIC flow control. These optimization settings are actually posted in the mlx5 PMD guide, my bad to have ignored them...

Cheers,
Lei
________________________________
From: sachin gupta <sachingg@yahoo.com>
Sent: Thursday, March 12, 2020 7:45:31 AM
To: users@dpdk.org; Yan Lei
Subject: Re: [dpdk-users] [ConnectX-5 MCX515A-CCAT / MCX516A-CCAT] Can only generate 53Gb/s with 64B packets

Hi Lei,

The smaller the Packet size, the more the number of Packets per second. I believe this is the inherent problem in all systems, even the ones which have proprietary hardware.
In general applications which uses such small packets are rare and you will see a mix of traffic in the system.

Regards
Sachin

On Thursday, March 12, 2020, 5:10:14 AM GMT+5:30, Yan Lei <l.yan@epfl.ch> wrote:


Hi, I am currently struggling in getting more than 53Gb/s with 64B packets on both of the MCX515A-CCAT and MCX516A-CCAT adapter when running a DPDK app that generates and transmits packets. WIth 256B packets I can get 98Gb/s.

Has anyone saw the same performance on these NICs? I checked the perf. report on https://core.dpdk.org/perf-reports/ but there are no numbers of these NICs.



Is this inherent limitation of these NICs (only reach 100Gb/s with larger packets)? If not, which firmware/driver/DPDK/system configurations could I tune to get 100Gb/s with 64B packets? My setup is as following: - CPU: E5-2697 v3 (14 cores, SMT disabled, CPU frequency fixed @ 2.6 GHz) - NIC: Mellanox MCX515A-CCAT / MCX516A-CCAT (Using only one port for TX, installed on PCIe Gen3 x16) - DPDK: 19.05 - RDMA-CORE: v28.0 - Kernel: 5.3.0 - OS: Ubuntu 18.04 - Firmware: 16.26.1040 I measured the TX rate with DPDK's testpmd: $ ./testpmd -l 3-13 -n 4 -w 02:00.0 -- -i --port-topology=chained --nb-ports=1 --rxq=10 --txq=10 --nb-cores=10 --burst=128 --rxd=512 --txd=512 --mbcache=512 --forward-mode=txonly So 10 cores generating and transmits 64B packets on 10 NIC queues. Your feedbacks will be much appreciated.

Thanks, Lei