How can I calculate GKE PVC IOPS

Question

https://cloud.google.com/compute/docs/disks/performance#machine-type-disk-limits

This document show performance with different vCPU VM types.
Where can I check this IOPS for PVC created by GKE?

Answer 1

When you create a PVC in GKE using default storageClass you are using Google's Persistent Disks.

You can check estimated performance by following:

• Cloud Console (Web UI) -> Compute Engine -> Disks -> DISK_NAME -> Estimated Performance

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Example:

Assuming that you created your PVC with a following manifest:

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: pvc-standard
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 215Gi

You can check the associated PV to your PVC by:

• $ kubectl get pvc pvc-standard

The output should show:

NAME           STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   AGE
pvc-standard   Bound    pv-volume-name                             215Gi      RWO            standard       4m16s

Please note the pv-volume-name as it will be the part of the name of your Persistent Disk.

Follow the steps below:

• Cloud Console (Web UI) -> Compute Engine -> Disks -> DISK_NAME -> Estimated Performance

You can see the estimated performance of your PVC:

Tip!

You can also check the IOPS when creating a Persistent Disk in GCP.

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Additional resources:

• Cloud.google.com: Persistent Disk
• Cloud.google.com: Compute: Docs: Disks: Pdspecs