Olleg Samoylov <olleg_s@xxxxxxx> writes: > I try to test this. Linux, memory page 4kb, disk page 4kb. I set BLCKSZ > to 4kb. I get some performance improve, but not big, may be because I > have 4Gb on test server (amd64). It's highly unlikely that reducing BLCKSZ is a good idea. There are bad side-effects on the maximum index entry size, maximum number of tuple fields, etc. In any case, when you didn't say *what* you tested, it's impossible to judge the usefulness of the change. regards, tom lane
