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Similar to the previous commit this increases the chance that data frequently needed by GetSnapshotData() stays in l2 cache. As we now take care to not unnecessarily write to ProcGlobal->vacuumFlags, there should be very few modifications to the ProcGlobal->vacuumFlags array. Author: Andres Freund <andres@anarazel.de> Reviewed-By: Robert Haas <robertmhaas@gmail.com> Reviewed-By: Thomas Munro <thomas.munro@gmail.com> Reviewed-By: David Rowley <dgrowleyml@gmail.com> Discussion: https://postgr.es/m/20200301083601.ews6hz5dduc3w2se@alap3.anarazel.de