Baseline step

A baseline step performs an experiment (a baseline experiment) and marks it as the initial experiment of a study. The purpose of the step is to build a reference configuration that Akamas can use to measure the effectiveness of an optimization conducted towards a system.

A baseline step offers three options when it comes to selecting the configuration of the baseline experiment:

• Use a configuration made with the default values of the parameters taken from the system of the study

• Use a configuration taken from an experiment of another study

• Use a custom configuration

The baseline step has the following structure:

where the from field should have the following structure:

study: "study_from_which_to_take_the_baseline"
experiments: [1]

with

• study contains the name or ID of the study from which to take the configuration

• experiments contains the number of the experiment from which to take the configuration

Examples

Baseline configuration with default values

Default values for the baseline configuration only require setting the name and type fields:

name: "my_baseline"    # name of the step
type: "baseline"       # type of the step (baseline)

Baseline configuration from another study

The configuration taken from another study to be used as a baseline only requires setting the from field:

name: "my_baseline"   # name of the step
type: "baseline"      # type of the step (baseline)
from:
  - study: "study_from_which_take_the_baseline" # name or id of the study from which to take the configuration
    experiments: [1]  # the number of the experiment from which to take the configuration

Notice: the from and experiments fields are defined as an array, but can only contain one element.

Custom baseline configuration

The custom configuration for the baseline only requires setting the values field:

name: "my_baseline"         # name of the step
type: "baseline"            # type of the step (baseline)
values:
  jvm1.maxHeapSize: 1024    # parameter maxHeapSize of jvm1 is set to 1024
  jvm2.maxHeapSize: 2048    # parameter maxHeapSize of jvm2 is set to 2048