Texas Instruments

Table of Contents

C28x large model Timing Benchmarks

Target Platform: ti.platforms.ezdsp28335

Tool Chain Version: 16.9.1

BIOS Version: bios_6_51_00_11_eng

XDCTools Version: xdctools_3_50_02_20_core

Benchmark Cycles
Interrupt Latency 171
Hwi_restore() 24
Hwi_disable() 17
Hwi dispatcher prolog 243
Hwi dispatcher epilog 172
Hwi dispatcher 416
Hardware Interrupt to Blocked Task 661
Hardware Interrupt to Software Interrupt 478
Swi_enable() 100
Swi_disable() 18
Post Software Interrupt Again 39
Post Software Interrupt without Context Switch 129
Post Software Interrupt with Context Switch 257
Create a New Task without Context Switch 3741
Set a Task Priority without a Context Switch 211
Task_yield() 256
Post Semaphore No Waiting Task 58
Post Semaphore No Task Switch 223
Post Semaphore with Task Switch 311
Pend on Semaphore No Context Switch 81
Pend on Semaphore with Task Switch 360
Clock_getTicks() 13
POSIX Create a New Task without Context Switch 6645
POSIX Set a Task Priority without a Context Switch 284
POSIX Post Semaphore No Waiting Task 65
POSIX Post Semaphore No Task Switch 238
POSIX Post Semaphore with Task Switch 324
POSIX Pend on Semaphore No Context Switch 95
POSIX Pend on Semaphore with Task Switch 377

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”.

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.