# tChronometerStart

Operates as a chronometer device that starts calculating the processing time of one or more subJobs in the main Job, or that starts calculating the processing time of part of your subJob.

Starts measuring the time a subJob takes to be executed.

For more technologies supported by Talend, see [Talend components](https://help.qlik.com/talend/r/en-US/7.3/components/logs-and-errors).

### In this section

* [tChronometerStart Standard properties](https://help.qlik.com/talend/en-US/components/7.3/logs-and-errors/tchronometerstart-standard-properties)