Fwd: BUG #17467: Perf degradation after switching to latest jdbc drivers

Forwarding this to the jdbc list.

Bug reference: 17467
Logged by: Benjamin Leis
Email address: benleis1(at)gmail(dot)com
PostgreSQL version: 13.4
Operating system: Linux
Description:

Due to the CVE-2022-21724 we upgraded our driver from 42.2.22 to 43.3.3.
We've now started to see a large perf degradation during initial opens to
the
database.

With a small perf test that just opens and tries a "select 1" we're getting
a ~2 - 2.5x slowdown on the connect times. Is this a known issue or
something that we can work around?

43.2.25 driver
INFO - New connection test
INFO - Open time: 25.00 Call time: 14.00
INFO - Open time: 24.00 Call time: 1.00
INFO - Open time: 19.00 Call time: 1.00
INFO - Open time: 16.00 Call time: 1.00
INFO - Open time: 26.00 Call time: 4.00
INFO - Open time: 20.00 Call time: 6.00
INFO - Open time: 20.00 Call time: 1.00
INFO - Open time: 16.00 Call time: 0.00
INFO - Open time: 19.00 Call time: 1.00
INFO - Open time: 19.00 Call time: 1.00

43.3.3 driver
INFO - New connection test
INFO - Open time: 57.00 Call time: 14.00
INFO - Open time: 58.00 Call time: 1.00
INFO - Open time: 62.00 Call time: 1.00
INFO - Open time: 54.00 Call time: 1.00
INFO - Open time: 59.00 Call time: 1.00
INFO - Open time: 56.00 Call time: 0.00
INFO - Open time: 59.00 Call time: 1.00
INFO - Open time: 61.00 Call time: 1.00
INFO - Open time: 57.00 Call time: 1.00
INFO - Open time: 58.00 Call time: 1.00