Sometimes, you may want to write your own performance measurement code. Make sure that you have exhausted all other options and investigated the available tools first.
Perhaps, you want to record the execution time of some process to write to your logs. Maybe you want to send this to a system such as Logstash and then visualize the changes over time with Kibana. Both are great open source products from Elastic, and they store data in the Elasticsearch search server. You can read more about both of these tools at https://www.elastic.co/.
You can easily record the length of time for a task by storing the current time before it starts and comparing this to the current time after it finishes, but this approach has many limitations. ...
