You should really take a look at LMDB's benchmarks then (http://symas.com/mdb/#bench http://symas.com/mdb/#bench). The one of interest to you should be the micr

You should really take a look at LMDB's benchmarks then (http://symas.com/mdb/#bench http://symas.com/mdb/#bench). The one of interest to you should be the microbenchmarks (http://symas.com/mdb/microbench/ http://symas.com/mdb/microbench/) inspired I believe by those from LevelDB. There are many modes being compared (synchronous/asynchronous, sequential/random reads/writes, small/big values, in-memory/SSD/HDD). The one you want (synchronous, random writes, HDD) shows this: - Small values (100B): Leveldb is at 1291 ops/sec, LMDB is at 297 ops/sec. - Large values (100kiB): Everyone is at ~115 ops/sec (apply portion of salt as usual, of course)