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Showing posts with label performance. Show all posts
Showing posts with label performance. Show all posts
Friday, December 12, 2025

Are you Happy with your CPU Performance?

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🚀   Quickly measure and load-test your CPUs with a simple Rust tool: test_cpu_parallel How fast is your CPU really, right now? It sounds l...
Monday, September 8, 2025

Troubleshoot I/O & Wait Latency with OraLatencyMap and PyLatencyMap

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I recently chased an Oracle performance issue where most reads were sub-millisecond (cache) , but a thin band around ~10 ms (spindles) domi...
Friday, April 26, 2024

Building an Apache Spark Performance Lab: Tools and Techniques for Spark Optimization

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Apache Spark is renowned for its speed and efficiency in handling large-scale data processing. However, optimizing Spark to achieve maximum ...
Wednesday, September 27, 2023

Enhancing Apache Spark Performance with Flame Graphs: A Practical Example Using Grafana Pyroscope

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TL;DR Explore a step-by-step example of troubleshooting Apache Spark job performance using flame graph visualization and profiling. Discove...
Friday, August 11, 2023

Performance Comparison of 5 JDKs on Apache Spark

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Dive into a comprehensive load-testing exploration using Apache Spark with CPU-intensive workloads. This blog provides a comparative analysi...
Friday, August 28, 2020

Apache Spark 3.0 Memory Monitoring Improvements

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TLDR;   Apache Spark 3.0 comes with many improvements, including new features for memory monitoring. This can help you troubleshooting memo...