Writings about software, performance, optimization and general software-related thingshttps://www.rovarma.com/https://www.rovarma.com/articles/from-profiling-to-kernel-patch-the-journey-to-an-ebpf-performance-fix/https://www.rovarma.com/articles/from-profiling-to-kernel-patch-the-journey-to-an-ebpf-performance-fix/A story about how an innocent profiling session led to a change to the Linux kernel that makes eBPF map-in-map updates much faster.Thu, 11 Dec 2025 00:00:00 GMThttps://www.rovarma.com/articles/optimizing-libdwarf-eh-frame-enumeration/https://www.rovarma.com/articles/optimizing-libdwarf-eh-frame-enumeration/For the Linux version of Superluminal we rely on unwind information stored in the .eh_frame section in a binary to perform stack unwinding. We’ll go over optimizations we made to libdwarf that greatly improve the performance of retrieving this information.Mon, 24 Nov 2025 00:00:00 GMT