Shubhankar Gambhir

JVM runtime engineering, systems performance, and low-level C++

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Lock-Free Is Not Free: ABA, Tagged Pointers, and a Bounded Ring Aug 19, 2026
A Deep Dive into Producer-Consumer Queues in C++ Jul 7, 2026

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A Deep Dive into Producer-Consumer Queues in C++
Lock-Free Is Not Free: ABA, Tagged Pointers, and a Bounded Ring
What Does a Lock Actually Cost? Benchmarking Concurrent Counters in C++
The 0.48 ns Ghost: How Code Alignment Broke Our Dispatch Benchmarks
The Alignment Cliff: Tracing a 0.478 ns Penalty to Skylake's Micro-Op Cache

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