If you are running Eclipse with PDE (Plugin Development Environment), press ALT+ Shift+ F2to use the Spy Plugin Menu . The cursor changes its shape, now press the desired perspective button, and you will get the perspective identifier.
Another option is to start the plugin search (from Search β Plugin). Find the string " org.eclipse.ui.perspectives", which is the name of the extension point that defines the perspective.
PDE, plugin.xml, JAR- . JAR, . , JAR ( JAR).