[GH-24] Set setLoggingTimestamp to false as default

[DaGeRe]

The property kieker.monitoring.setLoggingTimestamp triggers an automated adding of the current timestamp to each monitoring record:

kieker/monitoring/core/src/kieker/monitoring/core/controller/MonitoringController.java

Line 314 in 17182fb

if (this.autoSetLoggingTimestamp) {

For many records, like the OperationExecutionRecord with tout (

kieker/common/src-gen/kieker/common/record/controlflow/OperationExecutionRecord.java

Line 87 in 17182fb

private long tin;

) and everything inherting from AbstractEvent with timestamp (

kieker/common/src-gen/kieker/common/record/flow/AbstractEvent.java

Line 35 in 17182fb

private long timestamp;

), a time information is already given, and the loggingTimestamp is not used (to my knowlege). Therefore, getting the logging timestamp only increases overhead.

We should have a two step approach of removing it:

• First, we should set kieker.monitoring.setLoggingTimestamp=false in the default configurations
• Afterwards, we should remove the loggingTimetamp from the data model. This will further speed up the process (since also the empty long is not sent), but it will require adapting the tools that are using the logging timestamp. Eventually, this could break compatibility with old traces, so we need to be careful here.