Hi #C0303FDCZEZ / Team, Here I am again seeking help. Apologies if I am spamming this group. I have setup a Druid Cluster of 2 brokers and 12 historical, where each Historical is of size 64 core and 256 Gb Ram. I have also optimised the cluster as per the Druid Doc set the processing threads to 63 (64-1). Even for a worst case scenario, I should be able to handle atleast 63 concurrent requests. I am just Jmeter to load test the cluster. I have a heavy query that takes 1.5s to execute. When I fire this query repeatedly with concurrency as 10, the latency goes up to 7-8 seconds. What should I do to tune this cluster?