I think the 300% item is "Allow more efficient addition of heap and index pages". The source of the improvement is a number of related improvements around relat

I think the 300% item is "Allow more efficient addition of heap and index pages". The source of the improvement is a number of related improvements around relation extension, see https://postgr.es/m/20221029025420.eplyow6k7tgu6he3@awork3.anarazel.de https://postgr.es/m/20221029025420.eplyow6k7tgu6he3@awork3.a...