Hello! OpenLDAP Admin Guide says: [LMDB] supports indexing like the BDB backends, but it uses no caching and requires no tuning to deliver maximum search performance. We are planning migration from deprecated BerkeleyDB to recommended LMDB. Our OpenLDAP runs on RHEL7. Since the LMDB uses mmap() system calls, is it necessary to tweak any Linux kernel parameters to allow better caching etc.? Thanks for any information. Best regards, Jokke Hämäläinen