https://bugs.openldap.org/show_bug.cgi?id=8852
--- Comment #8 from Ondřej Kuzník ondra@mistotebe.net --- For comparison, using deltasync (and sortvals!) makes the consumer take a similar amount of CPU time (about +50-90 % on the provider's) to process the 10k value additions, just like Ryan noted earlier.
On the other idea, no clue on whether we can somehow limit the amount of data queued up without severely impairing replication progress.