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Hello, How does Rowley's tasking library compare to FreeRTOS? Spee? foot print? I am about to start a project and not sure whitch one is better! Any thoughts from Rowley's people? Gus |
RTOS....freeRTOS or Rowley's?
Started by ●February 4, 2005
Reply by ●February 5, 20052005-02-05
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Hi Gus, Here are speed/footprint numbers of CTL for an LPC21xx running at 60Mhz with MAM enabled. Premptive task schedule - i.e. time to reschedule a higher priority task after an ISR has executed. ARM 4,468 bytes 7.48 uSecs THUMB 3,124 bytes 8.24 uSecs Co-operative task schedule - i.e. time to reschedule a higher priority task due an API call from a task e.g. a semaphore signal. ARM 3,984 bytes 5.38 uSecs THUMB 2,848 bytes 5.44 uSecs So you're looking at 3K/4K of code overhead. A task stack will require at least 34 words (136 bytes) - which is a number I hope to reduce somehow/sometime this year. Regards Michael > > Hello, > > How does Rowley's tasking library compare to FreeRTOS? Spee? foot > print? > > I am about to start a project and not sure whitch one is better! > > Any thoughts from Rowley's people? > > Gus |
