I performed some OpenTSDB vs InfluxDB comparisons and found that InfluxDB used almost 20x the storage space and was 3x slower than OpenTSDB for an identical data set. The speed isn't that big of a problem and I'm convinced will get faster (esp with the write improvements in 0.9.1), but the space issue is harder to swallow.
HBase, which is what backs OpenTSDB, can compress data using LZO or snappy. Uncompressed, our test data was at 4GB, but went down to about 400MB after HBase compressed it. InfluxDB was using 8GB. OpenTSDB has done a lot of work to be byte efficient, and it's paid off. We hope InfluxDB will get to a similar place.
Yep, compression work is starting in the 0.9.2 release cycle. We'll be testing out those compression methods along with other stuff like delta encoding
HBase, which is what backs OpenTSDB, can compress data using LZO or snappy. Uncompressed, our test data was at 4GB, but went down to about 400MB after HBase compressed it. InfluxDB was using 8GB. OpenTSDB has done a lot of work to be byte efficient, and it's paid off. We hope InfluxDB will get to a similar place.