title: Which one is faster, OpenTSDB or KairosDB?
body: <p>OpenTSDB is super fast. KairosDB is known as re-write of OpenTSDB and as claimed that it's even faster than OpenTSDB (<a href="https://code.google.com/p/kairosdb/wiki/Changes" rel="nofollow">see here</a>). However I did some tests with a pseudo-distributed cluster (1 master, 1 slave, locally) for OpenTSDB and 1-node cluster for KairosDB on my VirtualBox (5 GB RAM, 3 cores). The insertion speed was around 100,000 records / sec for OpenTSDB and 30,000 records / sec for KairosDB. Did I configure something wrong with KairosDB or OpenTSDB is actually faster?</p>