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아래의 Go App을 Build해서 Kubernetes Worker Node에서 돌려보면,

각 Container가 사용하는 CPU Set(즉, Container App이 Pinning한 Core 정보), Memory Hugepages, Network 주소 및 PCI 정보를 알 수 있다.

 

 

https://github.com/openshift/app-netutil/tree/master/samples/go_app

 

GitHub - openshift/app-netutil: app-netutil is a library that provides API methods for applications to get pod network informati

app-netutil is a library that provides API methods for applications to get pod network information. - GitHub - openshift/app-netutil: app-netutil is a library that provides API methods for applicat...

github.com

 

그리고, 위 Repository에 DPDK example app container도 있으니까, DPDK 테스트할 때도 이용하면 좋다.

 

 

 

 

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이것저것 문서를 다 찾아보았지만 아래 Red Hat 설명이 제일 깔끔하고, 정확하다.

(Red Hat 검증팀이 직접 테스트해보면서, 그 절차를 문서화한 것이니까 당연히 정확할 듯)

 

 

16.9. DPDK 및 RDMA 사용 OpenShift Container Platform 4.10 | Red Hat Customer Portal

Access Red Hat’s knowledge, guidance, and support through your subscription.

access.redhat.com

 

 

Kubernetes Cluster에서 DKDP 테스트할 때, 필요한 예제 App과 Library !!!

 

 

GitHub - openshift/app-netutil: app-netutil is a library that provides API methods for applications to get pod network informati

app-netutil is a library that provides API methods for applications to get pod network information. - GitHub - openshift/app-netutil: app-netutil is a library that provides API methods for applicat...

github.com

 

 

GitHub - openshift/app-netutil: app-netutil is a library that provides API methods for applications to get pod network informati

app-netutil is a library that provides API methods for applications to get pod network information. - GitHub - openshift/app-netutil: app-netutil is a library that provides API methods for applicat...

github.com

 

 

 

아래 문서들은 호기심 해소를 위해 보면 좋은 자료들.

아직 내용을 다 읽어보진 않았지만, 설명 그림(illustration)이 괜찮게 보여서 인용해본다.

 

 

 

GitHub - intel/userspace-cni-network-plugin

Contribute to intel/userspace-cni-network-plugin development by creating an account on GitHub.

github.com

 

위 문서에 있는 이미지들...

 

 

 

 

 

MISC

Red Hat이 공식 Container Image Registry를 통해서 아래와 같이 제공하는 container image도 있기는 한데, 라이센스 문제나 비용 문제 때문에 쓸수 없으니까, 그냥 내용 참고만 하고 나중에 돈이 충분하게 생기면 한번 image pulling해서 써봐야겠다.

 

https://catalog.redhat.com/software/containers/openshift4/dpdk-base-rhel8/5e32be6cdd19c77896004a41?container-tabs=dockerfile&gti-tabs=registry-tokens 

 

Red Hat Ecosystem Catalog

Your role Select your roleArchitectDeveloperDevOps EngineerProduct ManagerSystems AdministratorOther

catalog.redhat.com

 

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NUMA with Linux

https://lunatine.net/2016/07/14/numa-with-linux/

 

NUMA with Linux :: Lunatine's Box — Lunatine's Box

linuxnumainterleaved memoryinterleavenumctlnumad 3236 Words 2016-07-14 15:18 +0900

lunatine.net

https://frankdenneman.nl/2016/07/07/numa-deep-dive-part-1-uma-numa/

 

NUMA Deep Dive Part 1: From UMA to NUMA - frankdenneman.nl

Non-uniform memory access (NUMA) is a shared memory architecture used in today’s multiprocessing systems. Each CPU is assigned its own local memory and can access memory from other CPUs in the system. Local memory access provides a low latency – high

frankdenneman.nl

 

 

 

 

HugePages

https://luis-javier-arizmendi-alonso.medium.com/enhanced-platform-awareness-epa-in-openshift-part-i-hugepages-a28e640fabf6

 

Enhanced Platform Awareness (EPA) in OpenShift — Part I, HugePages

This series of posts will show how to configure EPA support in OpenShift 4. In this part you will see 1GB HugePages configuration and usage

luis-javier-arizmendi-alonso.medium.com

 

CPU Pinning

https://luis-javier-arizmendi-alonso.medium.com/enhanced-platform-awareness-epa-in-openshift-part-ii-cpu-pinning-8e397fc9fe08

 

Enhanced Platform Awareness (EPA) in OpenShift — Part II, CPU pinning

This is the second part about how to configure an EPA ready OpenShift worker node, covering the CPU pinning and CPU isolation…

luis-javier-arizmendi-alonso.medium.com

 

 

NUMA Topology Awareness

https://luis-javier-arizmendi-alonso.medium.com/enhanced-platform-awareness-epa-in-openshift-part-iii-numa-topology-awareness-180c91c40800

 

Enhanced Platform Awareness (EPA) in OpenShift — Part III, NUMA Topology Awareness

This time we are going to focus on how we can assure that the CPU scheduling takes into account the NUMA topology of the processor

luis-javier-arizmendi-alonso.medium.com

 

 

SR-IOV, DPDK, RDMA

https://medium.com/swlh/enhanced-platform-awareness-epa-in-openshift-part-iv-sr-iov-dpdk-and-rdma-1cc894c4b7d0

 

Enhanced Platform Awareness (EPA) in OpenShift — Part IV, SR-IOV, DPDK and RDMA

In this Post we’ll review some concepts that help to minimize random latencies and improve the network performance: SR-IOV, DPDK, and RDMA.

medium.com

 

 

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구성 환경

 

Host OS: Ubuntu

Hypervisor: KVM

VM(Guest): CentOS, Ubuntu, CoreOS 등 (Linux 계열)

 

 

우선 아래의 Web Docs를 보고 설정 및 테스트해보고, 잘 동작하면 여기에 테스트한 내용을 기록할 예정이다.

 

https://help.ubuntu.com/community/KVM%20-%20Using%20Hugepages

 

KVM - Using Hugepages - Community Help Wiki

Introduction The computer memory is divided in pages. The standard page size on most systems is 4KB. To keep track on what information is stored in which page, the system uses a page table. Searching in this page table is (in computer terms) a time costly

help.ubuntu.com

 

 

블로그 작성자: sejong.jeonjo@gmail.com

 

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