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Windows Memory stress

Windows memory stress applies stress on the memory resources of a Windows OS based VM.

  • It checks the performance of the application running on the Windows VMs.

Windows memory stress

Use cases​

  • Windows memory stress determines the resilience of an application when stress is applied on the memory resources of a Windows VM.
  • It simulates the situation of lack of memory for processes running on the application, which degrades their performance.
  • It verifies the autopilot functionality of services or application on the VM.

Prerequisites​

  • Ensure that the prerequisites are fulfilled before executing the experiment.

External packages​

This fault uses Testlimit, which is installed as part of the infrastructure installation.

Mandatory tunables​

Tunable Description Notes
MEMORY_CONSUMPTION Amount of memory to consume in MB. Default: 0. For more information, go to memory consumption.
MEMORY_PERCENTAGE Percentage of total memory to consume. Default: 50. For more information, go to memory percentage.
TOTAL_CHAOS_DURATION Duration that you specify, through which chaos is injected into the target resource (in seconds). Default: 60s. For more information, go to duration of the chaos.

Optional tunables​

Tunable Description Notes
RAMP_TIME Period to wait before and after injecting chaos (in seconds). For example, 30 s. For more information, go to ramp time.

Memory consumption and percentage​

  • MEMORY_CONSUMPTION environment variable describes the specific amount of stress to be applied on the target Windows VM (in MB) for a specific duration.
  • MEMORY_PERCENTAGE environment variable describes the percentage of total memory that is to be consumed on the target Windows VM for a specific duration.

Following YAML snippet illustrates the use of this input variable.

apiVersion: litmuschaos.io/v1alpha1
kind: MachineChaosExperiment
metadata:
  name: windows-memory-stress-4ap
  labels:
    context: windows-memory-stress
    name: windows-memory-stress-4ap
spec:
  infraType: "windows"
  steps:
    - - name: windows-memory-stress-4ap
  tasks:
    - name: windows-memory-stress-4ap
      infraId: ""
      definition:
        chaos:
          fault: windows-memory-stress
          env:
            - name: MEMORY_CONSUMPTION
              value: ""
            - name: MEMORY_PERCENTAGE
              value: "50"
            - name: DURATION
              value: "30s"
            - name: RAMP_TIME
              value: ""