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Performance Benchmarking

Benchmark Results​

CPU allocation directly affects query speed. Allocating less than 1 vCPU (e.g., 300m) can drastically slow Spark jobs because of CPU throttling. The benchmark below compares different CPU configurations on TPC-DS queries 1 through 4 (1 GB dataset), with results in seconds.

TPC-DS benchmark results by CPU allocation | IOMETETPC-DS benchmark results by CPU allocation | IOMETE

Key takeaways:

  • Always allocate at least 1 vCPU for both driver and executor nodes.
  • Bumping executors to 2 or 4 vCPU noticeably improves throughput on compute-intensive workloads.
  • For detailed sizing guidance, see Node Type Sizing Best Practices.

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