Hi,
PQsendSyncMessage() was added in
https://commitfest.postgresql.org/46/4262/. It allows users to add a
Sync message without flushing the buffer.
As a follow-up, this change adds an additional meta-command to
pgbench, \syncpipeline, which will call PQsendSyncMessage(). This will
make it possible to benchmark impact and improvements of using
PQsendSyncMessage through pgbench.
Regards,
Anthonin