[kn7]

It was indeed an incorrect snippet -- removed it. We do have a group of PostgreSQL experts within the company and we let them tune the database for the benchmark. Let me remind, this was not a tune once, run once operation. We spent close to a month to make sure that we are not missing anything obvious for each storage engine. But as I explained, nothing much worked in case of PostgreSQL.

[billoneil]

Either way, something still seems off. If MongoDB and Elasticsearch were 3-5x more performant I would still find that surprising. A > 10-20x difference really seems like a configuration or implementation issue.