TI Cortex-M3 Timing Benchmarks

ti.platforms.stellaris:LM4F120H5QR:1 (compiler version: 5.0.1)

Benchmark Cycles (1)
Interrupt Latency 82 (2)
Hwi_restore() 3
Hwi_disable() 7
Hwi dispatcher prolog 87
Hwi dispatcher epilog 192
Hwi dispatcher() 271
Hardware Interrupt to Blocked Task 438
Hardware Interrupt to Software Interrupt 296
Swi_enable() 59
Swi_disable() 11
Post Software Interrupt Again 27
Post Software Interrupt without Context Switch 97
Post Software Interrupt with Context Switch 152
Create a New Task without Context Switch 1577
Set a Task Priority without a Context Switch 134
Task_yield 162
Post Semaphore, No Waiting Task 43
Post Semaphore No Task Switch 158
Post Semaphore with Task Switch 208
Pend on Semaphore, No Context Switch 55
Pend on Semaphore with Task Switch 214
Clock_getTicks 8

(1) The benchmark application was built using BIOS.LibType_Custom with the following BIOS.customCCOpts settings: "--endian=little -mv7M3 --abi=eabi -ms --opt_for_speed=2 --program_level_compile -o3".

Timings were obtained using the Tiva Launchpad TM4C123GH6PM board running at 40MHz.

(2) The M3 target also supports zero latency interrupts. See ti.sysbios.family.arm.m3.Hwi cdocs for details.