[Samba] doubts about synchronization

[Marcos Ariel Negrini]

Hello:
I am testing with 3 samba4 servers and testing the synchronization of 
information between them. Looking at the performance when uploading data 
to different servers, I see that some data takes a long time to be 
replicated (like a new user) and other data seems to be updated 
instantly (password change). Is this so? or is everything synchronized 
in the same way? if so, is there any list of information that 
synchronizes and other asynchronous?
greetings

-- 
Marcos Ariel Negrini