enhancement: rework core_uploader/debug images - #1115
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singholt
reviewed
Apr 22, 2026
singholt
reviewed
Apr 22, 2026
- rewrite core_uploader as a supervisor for debugging (core, heap, rss) - add support for SIGCONT, SIGUSR1 (gcore snapshot), SIGUSR2 (heap snapshot) - profile rss during run - profile jemalloc heap during run (needs env value setup, see docs) - remove redundant EFS images into unified debug - rework init-debug to use core_uploader - add libunwind (required for gcore snapshot) - compile jemalloc profiling support for debug builds - add docs (debug/heap-profiling) - update docs (valgrind, debugging, READMEs)
singholt
approved these changes
Apr 22, 2026
prateekchaudhry
approved these changes
Apr 22, 2026
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Summary
Why this change
The current debug image focuses on running and uploading a core file on crash. This is useful unless the application does not crash or no core file is created. The valgrind image uses valgrind for analysis for leaks, but is not useful for debugging memory growth during application lifetime.
This rework aims to enable tracking heap/rss and use the same upload mechanisms to capture on exit and midrun.
Using the jemalloc heaps and rss we can track allocations and discover where memory may be lingering during run. This helps track growth and suggest changes to fluent-bit in the case the memory is not leaked (on exit).
Testing
Description for the changelog
enhancement: rework core_uploader/debug images
Licensing
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.