Methodology used for testing

Single Instance

We conducted the performance testing on an AWS machine with 8 CPUs, 20ECUs, 7GB of memory and 4*420 GB of Storage. We selected a large instance because the scalability also needed to be tested along with the response time performance. Initially we loaded 10 million records into ODE instance and recorded the response times for Dense, Scattered, Sparse, Rare and Empty searches.
Dense Search: 1 in every 100 records
Scattered Search: 1 in every 10,000 records
Sparse Search: 1 in every 100,000 records
Rare Search: 1 in every 1,000,000 records
Empty Search: No records found
We continued performing the same tests after loading 25M, 50M, 100M, 250M, 350M, 450M, 500M and 650M records into the single instance. Response times at each of these steps were recorded, we stopped loading data after 650M records since the response times for all the searches started plateauing.

Clustered Setup

For clustered mode testing, we chose three single instances with the above mentioned configuration. Similar to single instance setup, we loaded each instance in incrementing steps of 10M, 25M, 50M, 100M, 250M, 350M, 450M, 500M and 650M records. The search was made on the master box, and the total number of records returned in the clustered setup was triple to that of a single instance setup. We again recorded the response times for Dense, Scattered, Sparse, Rare and Empty searches, we then stopped loading data after the 650M record mark since the response times had consistently plateaued. The graphical representation of the performance tests conducted can be seen from the above graphs.