# BE

## Async profiler

:thumbsup:[Example how to analyse, read flame grahps. Super](https://krzysztofslusarski.github.io/2022/12/12/async-manual.html)

{% hint style="info" %}
if your goal is to **optimize time,** and you use external systems (including DBs, queues, topics, microservices) or locks, sleeps, disk IO, It would help if you started with **wall-clock mode**.
{% endhint %}

