equivalent thing of mtr in mysql

Hi, guys. I'm new here.

I'm eager to figure out what is the equivalent thing of mtr in mysql in PG. When a dml operation occurs, it may modify multiple pages and gererate multiple redo log records. mtr can make those logs atomically be transferred to log buffer and written to disk. 

I think same situation exists in PG, but I can't find something like mtr, why ?

Any blogs that explain this will be appreciated.