Re: multi-master pgbench?

Perhaps the read option has a good interest for PostgreSQL to check a simultaneous load on a multiple cluster of Postgres with read operations. But I do not see any immediate use of write operations only. Have you thought about the possibility to define a different set of transaction depending on the node targetted? For example you could target a master with write-read and slaves with read-only.

Btw, this could have some use not only for Postgres, but also for other projects based on it with which you could really do some multi-master benchmark in writing.