High eDir CPU Utilization

[smo989]

I'm having trouble with a school network that is recently having trouble with high cpu utilization on servers. EDirectory has only the root partition that is replicated across three servers. One master and two read/writes.
- The servers that hold a replica have cpu utilizations around 70-100%
- All servers are running ds.nlm version 8.7.3.10 - upgraded today
- I have run dsrepair on all of the servers.
- DStrace screens come back with all processed = yes.
- All servers see each other without issue.
- Time is in sync

- remote manager of the users most critical server says that ds.nlm is taking 79% of execution time.
Once dsrepair is run then utilization is down for about 5 minutes then it starts to creep back up.
Any help would be appreciated.