The default is 8kb, but it can be recompiled for 4kb-32kb, I actually prefer 32kb because with ZSTD compression, it will most likey only use 8kb after being com

The default is 8kb, but it can be recompiled for 4kb-32kb, I actually prefer 32kb because with ZSTD compression, it will most likey only use 8kb after being compressed. Average compress ratio with ZSTD, is usually between 4x-6x. But depending on how your compressable you data is, you may also get a lot less. Note that changing this block size, will require initialization of a new data file system for your Postgres database.