limit for user exceeded

[Maciej Milaszewski]

Hi
System debian 8.11 dovecot-2.2.36.4 and I have some warnings in log likes:

Warning: Inotify watch limit for user exceeded, disabling. Increase
/proc/sys/fs/inotify/max_user_watches


cat /proc/sys/fs/inotify/max_user_watches
8192

in sysctl i change

#fs.inotify.max_user_watches= 8192
#fs.inotify.max_user_instances = 16384

fs.inotify.max_user_watches= 16384
fs.inotify.max_user_instances = 24576

One questions - should these values be equal?