QFabric · not peer reviewed
QFabric: Guarded Cross-Domain Task Recovery and Its Limits on a Linux-RTOS Board
QFabric treats task placement on a Linux-plus-microcontroller board as guarded recovery from violated empirical timing contracts, with hysteresis, semantic and capacity admission, quiescent epoch switching, and probation-based rollback. Measured on an Arduino UNO Q, each MCU call costs about 19 ms of Linux-resident dispatch and Linux contention degrades the MCU path more than the Linux path, so migration never helps; QFabric correctly never migrates, while a controller without hysteresis would make seven harmful moves.
- Research status
- preprint
- Lifecycle
- completed
- Relationship
- Elixpo-originated
- Registry state
- verified
- Reproducibility
- documented
- Repository license
- Apache-2.0
- Released
- 2026-11-01
Research context
Scope and public claim
QFabric has reached a completed research state. Its dossier keeps the work, repository, and status discoverable without suggesting an active product roadmap.
Elixpo-originated. Created or operated as part of Elixpo. Copyright and artifact licences still remain repository-specific.
Reproducibility
documented
The Zenodo archive and repository hold the source, firmware, the 120,000-invocation Stage 12 trace campaign, and generators for every table and figure; the deadline rule and replay protocol were committed before data collection. Results come from one UNO Q board.
Review statement
not peer reviewed
Elixpo reports the review state explicitly and does not imply external peer review where none is recorded.
Licensing
paper
CC BY 4.0
software and non-manuscript project material
Apache-2.0
Repository-level evidence
GitHub currently detects Apache-2.0 for the software. The unpublished manuscript and original figures retain separately recorded terms.
License checked 2026-10-17 · registry status checked 2026-10-17
Citation
Bhattacharya and Chakraborty. QFabric: Guarded Cross-Domain Task Recovery and Its Limits on a Linux-RTOS Board. arXiv:2611.01598 (2026).