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Over the years, I have learned a lot about how CPUs execute code and what their internals look like because I have worked on projects such as the Linux kernel and ScyllaDB, which are close to metal. I’ve even played a bit with Verilog in a futile attempt to build my own RISC-V core.Unlike CPUs, GPUs have been mostly...

Hello. This September will be the 25th anniversary of my writing my first program in a subset of C++ for a high school course. It’s been a long journey, so I thought I would reflect on what I’ve learned over these past 25 years in this post.First, what is “cool” is not always good programming style. The “cool” thing...

The Exein team has released a new version of Pulsar, 0.7.0. Pulsar is a runtime security agent for Linux systems, designed with specific focus on performance and low overhead. Powered by eBPF, it traces system activity from the Linux kernel and lets you apply security policies in real time on top of the events trace...