Yes, 80 vCPU are logical cores, but ClickHouse is using the number of threads equal to the number of physical cores by default (40 threads). This is a reasonab

Yes, 80 vCPU are logical cores, but ClickHouse is using the number of threads equal to the number of physical cores by default (40 threads). This is a reasonable default - when setting up the number of threads to full vCPU count, performance of single query will be slightly better but this will affect the max number of concurrent queries badly.