Re: BUG #15609: synchronous_commit=off insert performance regression with secondary indexes

>>>>> "PG" == PG Bug reporting form <noreply@postgresql.org> writes:

 PG> Questions:

 PG>   Is there an extra setting for Postgres 10+ required to "recover"
 PG> the performance loss from PG9.5?

The default wal_level changed between pg 9.6 and pg10, does reverting
that change make any difference? (this is just a guess)

 PG>   Why is PG10+ slower by default when synchronous_commit is off?

synchronous_commit is probably only relevant to the extent that turning
it off causes the test not to be bottlenecked on WAL flush calls.

-- 
Andrew (irc:RhodiumToad)