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7cc3bb777c
Move JFFS2 from the Cygwin implementation of CRC32 to the zlib implementation which can take advantage of hardware acceleration and reduces code duplication. Synthetic benchmarks on AArch64 hardware show approximately a 17x improvement in CRC32 calculation speed and real-world testing with JFFS2 shows a 1% improvement in mount times, a 5% improvement in data write times, and a 9% improvement in garbage collection times. A test was written to compare hash generation between the two algorithms and a partition was created with one and then remounted with the other with no errors.
Real-Time Executive for Multiprocessing Systems
RTEMS is a real-time executive (kernel) which provides a high performance environment for embedded applications with the following features:
- Standards based user interfaces.
- Multitasking capabilities.
- Homogeneous and heterogeneous multiprocessor systems.
- Event-driven, priority-based, preemptive scheduling.
- Optional rate monotonic scheduling.
- Intertask communication and synchronisation.
- Priority inheritance.
- Responsive interrupt management.
- Dynamic memory allocation.
- High level of user configurability.
- Open source with a friendly user license.
Project git repositories are located at:
Online documentation is available at:
RTEMS Doxygen for CPUKit:
RTEMS POSIX 1003.1 Compliance Guide:
RTEMS Mailing Lists for general purpose use the users list and for developers use the devel list.
The version number for this software is indicated in the VERSION file.