Deepanshu Kartikey’s Homepage

Performance Engineer at Clickpost. I go deep into systems and make them faster. When I’m not optimizing production, I’m hacking on the Linux kernel and building tools for fun. I have a blog, and I’m also on GitHub and LinkedIn. Here is my about page.

Recent blog posts:

2025 » Fixing a recursive deadlock in OpenTelemetry's Python SDK
2025 » Scaled servers while curtailing cloud costs using eBPF
2025 » Hunting Python memory leaks at the C level

Blog index

Open Source Contributions

1. Linux Kernel — patches merged across ext4, kernel/fork, ntfs3, atm/lec, bpf, mm, net, ocfs2 and more. Reviewed by Theodore Ts’o, Andrew Morton, Christian Brauner, and others.

See all kernel patches →

2. OpenTelemetry — Fixed a recursive deadlock in the Python SDK under concurrent tracing load. Diagnosed root cause, wrote reproducer, merged upstream.

PR #4302 · Blog post

All contributions →

Tools

TrackLeak — Memory leak detector for Python. Hooks malloc and PyMem_*, zero instrumentation, works on live processes.