Every time my "updater" process writes an LDIF to LDAP, clients start seeing timeouts during authentication. Even with a small number of inserts or removals, this problem shows up.

openldap 2.4.47, MBD, 16 core Linux server, 6 nodes in a n-way multimaster replication configuration. The on disk database is 1.5gigs.

Can anyone suggest tunables for this problem?

I've tried "threads 64" but that didn't improve things.

[2021-01-24 00:01:45] connection_input: conn=2721465 deferring operation: binding

[2021-01-24 00:01:45] connection_input: conn=2721505 deferring operation: binding
[2021-01-24 00:01:45] connection_read(17): no connection!
[2021-01-24 00:01:46] connection_input: conn=2721694 deferring operation: binding
[2021-01-24 00:01:47] connection_input: conn=2721844 deferring operation: binding
[2021-01-24 00:01:48] connection_input: conn=2722210 deferring operation: binding
[2021-01-24 00:01:48] connection_input: conn=2722208 deferring operation: binding

[2021-01-24 00:01:48] connection_input: conn=2722283 deferring operation: binding

Thank you