Summary: Does not seem to have to much impact on run time (but uses a lot less memory)

Test Plan: CI

Reviewers: oazizi, michelle, #engineering

Reviewed By: oazizi, #engineering

Differential Revision: https://phab.corp.pixielabs.ai/D556

GitOrigin-RevId: ee561144c810c2fb93a639bfd9dfc3f2b29dc7ce