timeout and period values are rounded

[denis]

Hello,

I'm trying to play with timeouts and periods in my proxy setup.
Changing values:
zombie_period, response_window
in debug log getting warnings:
WARNING: Ignoring "response_window = 60.000000", forcing to
"response_window = 30.000000"
WARNING: Ignoring "zombie_period = 10", forcing to "zombie_period = 30"

experimented a bit and found that if I set response_window = 70, it will be
rounded to 60
i.e WARNING: Ignoring "response_window = 70.000000", forcing to
"response_window = 60.000000"

if I set zombie_period = 0, it will be rounded to 1:
WARNING: Ignoring "zombie_period = 0", forcing to "zombie_period = 1"

but didn't find any way to get any other values, like zombie_period = 15 or
response_window = 50.
they're always rounded to some other value, and I was not able to find in
docs how/why it's rounded.
freeradius 3.0.12


Also I have wider/general question:
Are there any "best practices" for high latency links with proxy setup.
When NAS'es are far from home server. Actually adjusting timeouts and
periods I'm trying to fight continuous zombie/alive issue:
Sun Jul  9 08:55:51 2017 : ERROR: (503) ERROR: Failing proxied request for
user "user1", due to lack of any response from home server 46.111.128.2
port 1813
Sun Jul  9 08:57:17 2017 : Proxy: (515) Marking home server 46.111.128.2
port 1813 alive


--
Denis