Up to now it takes one hour to run all tests of our software which is build with this components: Linux, PostgreSQL, Python, Django
I guess the performance could be improved if we fake fsync calls.
PostgreSQL has the option to disable fsync, but wouldn't it be better to tell the whole operating system to delay fsync as much as it can?
Update: I know that this is unsafe and a server crash could make the system unrecoverable. But this is a unimportant jenkins slave, which can be set up again fast.
Update2: PostgreSQL is just one of many services running on that host. I search a solution on operating system level.