Some of the behaviours you observe may be due to the same bug I encountered:

https://dovecot.org/pipermail/dovecot/2019-July/116475.html

Especially, regarding the ‘successful' field for auth, which does not exists and is really named ‘success', and which is never set anyway.

Le 15 août 2019 à 23:57, Matt Bryant via dovecot <dovecot@dovecot.org> a écrit :

Is there any additional documentation/information around the new stats module.

Have added some metrics just to see what they produce

Metrics

metric imap { event_name = imap_command_finished #source_location = example.c:123

#categories =

fields = name args running_usecs bytes_in bytes_out

#filter {
#    field_key = wildcard
#}

}

metric sql { event_name = sql_query_finished }

metric auth { event_name = auth_request_finished fields = user transport error successful }

and get the following

[root@stargate dovecot]# doveadm stats dump metric_name field count sum min max avg median stddev %95 imap duration 370 2007904499 130 62955249 5426768.92 2068 16436817.37 60026465 imap name 370 0 0 0 0.00 0 0.00 0 imap args 0 0 0 0 0.00 0 0.00 0 imap running_usecs 370 2007865330 81 62955127 5426663.05 1991 16436816.76 60026329 imap bytes_in 370 5366 2 173 14.50 8 19.04 35 imap bytes_out 370 2119971 0 941517 5729.65 41 53760.89 2082 sql duration 18 28991 991 2305 1610.61 1660 377.36 2305 auth duration 12 26046980 8146 7079879 2170581.67 847730 2457811.23 7079879 auth user 12 0 0 0 0.00 0 0.00 0 auth transport 12 0 0 0 0.00 0 0.00 0 auth error 0 0 0 0 0.00 0 0.00 0 auth successful 0 0 0 0 0.00 0 0.00 0

the main wiki page on stats/events doesnt really hold much detail whats stores for each event the above fields dont make much sense

and top no longer works out of the box

[root@stargate dovecot]# doveadm stats top

usage: doveadm [-Dv] [-f <formatter>] stats <command> [<args>] dump [-s <stats socket path>] [-r] [-f <fields>]

has is been removed ? do you need to specify something additional now ???

rgds

Matt