According to documentation, for "min_wal_size" and "max_wal_size" parameters
default values are:
For max_wal_size: The default is 1 GB
For min_wal_size: The default is 80 MB
Then I look this parameters from my database config:
select name, setting, unit
from pg_settings
where name in ('min_wal_size', 'max_wal_size')
Gives result:
name | setting | unit
----------------------------------
max_wal_size | 64 |
min_wal_size | 5 |
I have 2 questions:
1) Why these values doesn't match default values, which are shown in docs? I never changed config settings at all.
2) Why unit column is empty/NULL for these parameters? What means 64 and 5 values in this case? MB? GB? or what?
Why this is not like for example work_mem parameter, when everything is clear:
name | setting | unit
----------------------------------
work_mem | 4096 | kB
