GCC Cortex-M3 Timing Benchmarks

ti.platforms.tiva:TM4C123GH6PM:1 (compiler version: 4.8.4)

Benchmark Cycles (1)
Interrupt Latency 152 (2)
Hwi_restore() 1
Hwi_disable() 4
Hwi dispatcher prolog 116
Hwi dispatcher epilog 212
Hwi dispatcher 318
Hardware Interrupt to Blocked Task 617
Hardware Interrupt to Software Interrupt 370
Swi_enable() 65
Swi_disable() 12
Post Software Interrupt Again 30
Post Software Interrupt without Context Switch 82
Post Software Interrupt with Context Switch 183
Create a New Task without Context Switch 2148
Set a Task Priority without a Context Switch 158
Task_yield() 255
Post Semaphore, No Waiting Task 47
Post Semaphore No Task Switch 244
Post Semaphore with Task Switch 347
Pend on Semaphore, No Context Switch 55
Pend on Semaphore with Task Switch 361
Clock_getTicks() 8

(1) The benchmark application was built using BIOS.LibType_Custom with the following BIOS.customCCOpts settings:

"-mcpu=cortex-m3 -mthumb -mabi=aapcs -O3 -Wunused -Wunknown-pragmas -ffunction-sections -fdata-sections -Dti_sysbios_Build_useHwiMacros -Dfar= -D__DYNAMIC_REENT__".

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.