C28x large model Timing Benchmarks

Target Platform: ti.platforms.tms320x28:TMS320F280049M:1

Tool Chain Version: 16.9.1

BIOS Version: bios_6_55_00_05_eng

XDCTools Version: xdctools_3_50_05_11_core_eng

Benchmark Cycles
Interrupt Latency 158
Hwi_restore() 18
Hwi_disable() 15
Hwi dispatcher prolog 203
Hwi dispatcher epilog 152
Hwi dispatcher 355
Hardware Interrupt to Blocked Task 688
Hardware Interrupt to Software Interrupt 419
Swi_enable() 85
Swi_disable() 12
Post Software Interrupt Again 32
Post Software Interrupt without Context Switch 119
Post Software Interrupt with Context Switch 229
Create a New Task without Context Switch 4154
Set a Task Priority without a Context Switch 187
Task_yield() 290
Post Semaphore No Waiting Task 90
Post Semaphore No Task Switch 257
Post Semaphore with Task Switch 387
Pend on Semaphore No Context Switch 70
Pend on Semaphore with Task Switch 379
Clock_getTicks() 12
POSIX Create a New Task without Context Switch 7023
POSIX Set a Task Priority without a Context Switch 239
POSIX Post Semaphore No Waiting Task 102
POSIX Post Semaphore No Task Switch 264
POSIX Post Semaphore with Task Switch 396
POSIX Pend on Semaphore No Context Switch 79
POSIX Pend on Semaphore with Task Switch 387

The benchmark application was built using BIOS.LibType_Custom with the following BIOS.customCCOpts settings: “-v28 -DLARGE_MODEL=1 -ml -mo –program_level_compile -o3”.

Runtime performance was optimized by reducing CPU clock speed to eliminate flash wait states.

The C28x targets also supports zero latency interrupts. See ti.sysbios.family.c28.Hwi cdocs for details.

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