mogaika / hugepagescheceker

Tool allow to check your linux hugepages setup. Can be runned in docker/kubernetes

hugepagescheceker

Allow to check your linux hugepages setup. Can be used inside docker/kubernetes. Must work for any page size, but tested only on 2M pages. Docker image: mogaika/hugepageschecker

Sample outputs

• Everything good

  INFO: Test passed for /dev/hugepages
  

• Permissions problems

  ERROR: Create hugepage file syscall error: permission denied
  

• Problems with your configuration (k8s example)

  INFO: Trying to write page data
  [signal SIGBUS: bus error code=0x2 addr=0x7fcfa0200000 pc=0x4ad197]
  

• Hugepages not configured

  INFO: Mounts found: []
  

• Out of hugepages memory

  ERROR: Unable to map page: cannot allocate memory
  

Kubernetes pod spec

spec:
  containers:
  - name: hugepageschecker
    image: mogaika/hugepageschecker
    imagePullPolicy: Always
    command:
      - sh
      - -c
      - "/hugepageschecker && sleep 999999999"
    resources:
      limits:
        hugepages-2Mi: 2Mi
        memory: 128Mi
    volumeMounts:
    - mountPath: /hugepages
      name: hugepages
  volumes:
  - name: hugepages
    emptyDir:
      medium: HugePages