TI Cortex-M4 with hard FP Timing Benchmarks

Target Platform: ti.platforms.msp432:MSP432P401R:1

Tool Chain Version: 18.1.2

BIOS Version: bios_6_73_00_11_eng

XDCTools Version: xdctools_3_50_07_20_core

Benchmark	Cycles
Interrupt Latency	137
Hwi_restore()	6
Hwi_disable()	7
Hwi dispatcher prolog	122
Hwi dispatcher epilog	223
Hwi dispatcher	334
Hardware Interrupt to Blocked Task	525
Hardware Interrupt to Software Interrupt	354
Swi_enable()	64
Swi_disable()	9
Post Software Interrupt Again	30
Post Software Interrupt without Context Switch	88
Post Software Interrupt with Context Switch	173
Create a New Task without Context Switch	2326
Set a Task Priority without a Context Switch	141
Task_yield()	206
Post Semaphore No Waiting Task	78
Post Semaphore No Task Switch	165
Post Semaphore with Task Switch	255
Pend on Semaphore No Context Switch	65
Pend on Semaphore with Task Switch	269
Clock_getTicks()	8
POSIX Create a New Task without Context Switch	4102
POSIX Set a Task Priority without a Context Switch	186
POSIX Post Semaphore No Waiting Task	87
POSIX Post Semaphore No Task Switch	176
POSIX Post Semaphore with Task Switch	267
POSIX Pend on Semaphore No Context Switch	78
POSIX Pend on Semaphore with Task Switch	283

The benchmark application was built using BIOS.LibType_Custom with the following BIOS.customCCOpts settings: “–endian=little -mv7M4 –abi=eabi –float_support=fpv4spd16 -ms –opt_for_speed=2 –program_level_compile -o3”.

The M4F target also supports zero latency interrupts. See ti.sysbios.family.arm.m3.Hwi cdocs for details.

To minimize the effects of wait states, the performance measurements are collected at optimal CPU clock speeds on MSP432 and Tiva devices.

See the SYS/BIOS User’s Guide for more information regarding how interrupt latency is calculated.