Sorry, wrong mailing list! On 22/03/2015 10:47 AM, Geoff Swan wrote: > I had to duplicate an LMDB database for replication recently, and used > mdb_copy to do so. > One server is using the original data.mdb database (which is sparse) and > the other is using the mdb_copy non-sparse data.mdb file. > The two servers are identical (hardware, OS, software and > configuration). OpenLDAP-2.4.39 is being used, 64 bit Linux OS. > mdb_stat shows the map size as the same, which is expected. > > Will the use of the non-sparse file cause any performance issues? > > The reason for asking is that I am seeing a difference in search times > between the two. > With 20 million objects, a search on modifyTimestamp (which is indexed) > gives: > server 1: approx 1s > server 2: approx 60s > > server 2 started with the same search time as server 1 when the > databases were originally copied, but has slowly increased its search > time over about a week for this same search.
