I was reading the blog 
https://blog.2ndquadrant.com/on-the-impact-of-full-page-writes .

My queries:

How randomness of UUID will likely to create new leaf page in btree index?
In my understanding as the size of UUID is 128 bits i.e. twice of BIGSERIAL , 
more number of pages will be required to store the same number of rows and 
hence there can be increase in WAL size due to FPW .
When compared the index size in local setup UUID index is ~2x greater in size.


Sanyam Jain

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