Topic: This post is about techniques and tools for measuring and understanding CPU-bound and memory-bound workloads in Apache Spark. You will find examples applied to studying a simple workload consisting of reading Apache Parquet files into a Spark DataFrame.
Topic: In this short post you can find examples of how to use IPython/Jupyter notebooks for running SQL on Oracle.
Topic: In this post you will find a short discussion and pointers to the code of a few sample scripts that I have written using Linux BPF/bcc and uprobes for Orac
Topic: in this post you can find examples of how to get started with using IPython/Jupyter notebooks for querying Apache Impala.
Topic: This post provides a short summary and pointers to previous work on Extended Stack Profiling for troubleshooting and performance investigations.
Topic: this post is about investigating Oracle wait events using stack profiles and flame graphs extended with OS-process state and Oracle wait event details.
Topic: This blog post is about kernel stack profiling and visualization with flame graphs.