Linux 7.4 Coredumps via Sockets Can Be Much Smaller with Sparse Support
Last year, coredump support via Unix domain sockets was added to the Linux kernel. With sparse support now merged for Linux 7.4, coredumps taken via sockets can be significantly smaller.
Summary: Last year, coredump support via Unix domain sockets was added to the Linux kernel. With sparse support now merged for Linux 7.4, coredumps taken via sockets can be significantly smaller.
Coredumps are critical memory images for debugging when an application crashes. While traditionally taken via pipe-based mechanisms, the ability to take coredumps via Unix domain sockets was added last year.
The sparse support introduced with Linux 7.4 aims to significantly reduce the size of coredumps. This mechanism skips empty or zero-filled regions, storing only truly used or modified memory pages in the coredump file.
In live systems, especially when applications consuming large amounts of memory crash, coredumps can occupy gigabytes of space. Smaller coredumps mean disk space savings, faster transfers, and easier analysis.
Infrastructure engineers and developers can evaluate this new feature to accelerate debugging processes and reduce storage costs. Coredump management will become more efficient, especially in production environments.
🔗 Source: Phoronix Hardware
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