Adam Clarke on Psalms 83:6

The tabernacles of Edom - The tents of these different people are seen in the grand encampment. Tents are probably mentioned because it seas the custom of some of these people, particularly the lshmaelites, to live a migratory or wandering life; having no fixed habitation, but always abiding in tents. Their posterity remain to the present day, and act and live in the same manner.

Hagarenes - These people dwelt on the east of Gilead; and were nearly destroyed in the days of Saul, being totally expelled from their country, 1Chr 5:10, but afterwards recovered some strength and consequence; but where they dwelt after their expulsion by the Israelites is not known.