# \[AIAB-03] Create the optimization study

In this guide, your goal is to optimize Konakart performance such that:

* throughput is maximized so that your e-commerce service can successfully support the high traffic peaks expected in the upcoming highly demanding season
* as you need to take into account the customer experience, you want also to make sure that the response time always remains within the required service-level objective (SLO) of 100ms.

This business-level goal translates into the following configuration for your Akamas study:

* goal: maximize `transactions_throughput` metric
* constraint: `transactions_response_time` metric to stay under 100ms

You can simply take the following description of your study and copy it in a `study-max-throughput-with-SLO.yaml` file:

```yaml
name: Optimize konakart throughput with response time SLO
description: Tune the JVM to increase transaction throughput while keeping good performance
system: konakart

goal:
  objective: maximize
  function:
    formula: konakart.transactions_throughput
  constraints:
    absolute:
    - name: ResponseTimeSLO
      formula: konakart.transactions_response_time <= 100    # 100ms service-level objective (SLO)

windowing:
  type: stability
  stability:
    metric: konakart.transactions_response_time
    width: 2
    maxStdDev: 1000000
    when:
      metric: konakart.transactions_throughput
      is: max

workflow: konakart-optimize

parametersSelection:
  - name: jvm.jvm_gcType
  - name: jvm.jvm_maxHeapSize
    domain: [32,1024]
  - name: jvm.jvm_newSize
    domain: [16,1024]
  - name: jvm.jvm_survivorRatio
  - name: jvm.jvm_maxTenuringThreshold
  - name: jvm.jvm_parallelGCThreads
    domain: [1,4]
  - name: jvm.jvm_concurrentGCThreads

parameterConstraints:
  - name: "JVM max heap must always be greater than new size"
    formula: jvm.jvm_maxHeapSize > jvm.jvm_newSize
  - name: "JVM GC concurrent threads must always be less than or equal to parallel"
    formula: jvm.jvm_parallelGCThreads >= jvm.jvm_concurrentGCThreads

steps:
  - name: baseline
    type: baseline
    values:
      jvm.jvm_maxHeapSize: 256

  - name: optimize
    type: optimize
    numberOfExperiments: 50
```

and then run the following command to create your study:

```bash
akamas create study study-max-throughput-with-SLO.yaml
```


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