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Karuppiah Natarajan (@karuppiah7890) | Hashnode

@karuppiah7890

Karuppiah Natarajan

@karuppiah7890

Website

Software Developer

Chennai, IndiaJoined September 2017

About

I like learning new stuff - anything, including technology. I love tinkering with new tools, systems and services, especially open source projects

Available for

I am happy to help and mentor folks

Karuppiah Natarajan's blogs

Karuppiah's Blogkaruppiah.dev57 posts

About

I like learning new stuff - anything, including technology. I love tinkering with new tools, systems and services, especially open source projects

Available for

I am happy to help and mentor folks

Karuppiah Natarajan's blogs

Karuppiah's Blogkaruppiah.dev57 posts

Recently published

karuppiah.dev

inodes

inodes is a concept in Linux. Oh wait…no Fun fact that I learned while experimenting on my macOS - I can see that the term and concept of inodes exists in the context of macOS too Looks like it’s a “Unix” thing and Linux and Darwin, both are Unix bas...

Jan 4·2 min read

karuppiah.dev

Kubernetes Preemption Event

You can look for Kubernetes Preemption Events in your observability system assuming you are exporting your Kubernetes Events to some store like some time series DB or similar In our case, we use Prometheus and we have an exporter for exporting the Ku...

Dec 24, 2025·1 min read

karuppiah.dev

Speedscope: Performance Data Visualization

Recently, when I discovered the py-spy profiler took for Python, I also discovered Speedscope, which is visualization tool for visualizing performance data (performance profile etc). This is a flamegraph Visualization. I have something of this sort w...

Dec 19, 2025·1 min read

karuppiah.dev

Profilers!

So, today, we had an issue in one of our internal systems called API Tester. It was very slow. Only today it was slow, and the CPU usage was very high according to our monitoring systems, especially since today morning. Before noticing the CPU usage,...

Dec 18, 2025·4 min read

karuppiah.dev

Kubernetes Features Enabled

If you have Prometheus running and scraping metrics - You can find Kubernetes list of features enabled information for every feature using kubernetes_feature_enabled metric which gives build information kubernetes_feature_enabled{} The name of the f...

Dec 18, 2025·1 min read