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Version: latest

Gadget biolatency

The biolatency gadget traces block device I/O (disk I/O), and records the distribution of I/O latency (time), giving this as a histogram when it is stopped.

Example CR​

apiVersion: gadget.kinvolk.io/v1alpha1
kind: Trace
metadata:
  name: biolatency
  namespace: gadget
spec:
  node: minikube
  gadget: biolatency
  runMode: Manual
  outputMode: Status

Operations​

start​

Start biolatency

$ kubectl annotate -n gadget trace/biolatency \
    gadget.kinvolk.io/operation=start

stop​

Stop biolatency and store results

$ kubectl annotate -n gadget trace/biolatency \
    gadget.kinvolk.io/operation=stop

Output Modes​

  • Status