LX2160A PCIe Latency and Performance Test

cancel
Showing results for 
Search instead for 
Did you mean: 

LX2160A PCIe Latency and Performance Test

100% helpful (1/1)

LX2160A PCIe Latency and Performance Test

Introduction

Background

There is not an official data for PCIe latency and performance, while some customers pay attention to and request these data. This paper utilizes Lmbench lat_mem_rd tool and DPDK qdma_demo to test the PCIe latency and performance separately.

Requirement

1) Plug Advantech iNIC (LX2160A) into LX2160ARDB.

2) Configure EP ATU outbound window at console.

3) Apply the patch to lmbench-3.0-a9, and recompile lmbench tool.

4) There is qdma_demo in iNIC kernel rootfs by default.

Test Environment

 

huaixi_wei_0-1631108249650.png

 

PCIe Latency Overview

 

Direction

Description

Latency(ns)

PCIe(Gen3 x8) – DDR

read from EP to RC

900

PCIe – PCIe – DDR

Read from EP to EP

(through CCN-508)

1550

PCIe – PCIe – DDR

Read from EP to EP

(through HSIO NOC)

1500

Setup

1) LX2160ARDB

2) iNIC – PCIe EP Gen3 x8 with LX2160A

3) Test App running at iNIC: Lmbench lat_mem_rd

  # ./lat_mem_rd_pcie -P 1 -t 1m

 

PCIe Performance Overview 

 

Direction

Throughput (Gbps)

PCIe EP to EP

50

 

Setup

1) LX2160ARDB

2) iNIC – PCIe EP Gen3 x8 with LX2160A

3) Test App : qdma_demo running at iNIC

  $./qdma_demo -c 0x8001 -- --pci_addr=0x924fa00000 --packet_size=1024 --test_case=mem_to_pci

Peer to Peer On LX2 Rev. 2 

 

huaixi_wei_0-1631109380240.png

 

Products

 

Product Category

NXP Part Number

URL

MPU

LX2160A

https://www.nxp.com/products/processors-and-microcontrollers/arm-processors/layerscape-processors/la...

LSDK software

Layerscape Software Development Kit

https://www.nxp.com/design/software/embedded-software/linux-software-and-development-tools/layerscap...

 

Tools 

 

NXP Development Board

URL

LX2160ARDB

https://www.nxp.com/design/qoriq-developer-resources/layerscape-lx2160a-reference-design-board:LX216...

Advantech ESP2120 Card

 

 

 

Attachments
Version history
Revision #:
3 of 3
Last update:
‎09-08-2021 07:07 AM
Updated by: