https://bugs.openldap.org/show_bug.cgi?id=9533
--- Comment #7 from Andrey akrush24@gmail.com ---
Probably your $PROVIDER servers are just being slow to respond. Increase the number of slapd threads so that some workers are available while the consumers are busy trying to contact the providers.
This ticket remains INVALID. Software usage questions should have been directed to the openldap-technical mailing list.
I am recreating ldap hangs, can you try running my example https://github.com/akrush24/openldap-replication?
```
git clone https://github.com/akrush24/openldap-replication # it's my own example cd openldap-replication ./up.sh time docker exec -ti ldap01 ./addnewdb.sh # attempt to create 333 dbs ./check.sh # check dbs count in every ldap servers
```