Improving commit time when using configuration groups

When committing a configuration that uses configuration groups, at the time of commit, all of the inheritance paths of the configuration groups must be fully expanded into memory to apply the configurations as intended. This can negatively impact commit performance if there are many configuration groups and they are configured using wildcards. 

To improve commit performance, you can configure persist-groups-inheritance at the [edit system commit] hierarchy level. Configuring this option causes the configuration groups to be expanded into the database instead of into the process memory at commit time.