C674 Timing Benchmarks

Target Platform: ti.platforms.evmTI814X

Tool Chain Version: 8.1.2

BIOS Version: bios_6_55_00_05_eng

XDCTools Version: xdctools_3_50_05_11_core_eng

Benchmark Cycles
Interrupt Latency 283
Hwi_restore() 2
Hwi_disable() 3
Hwi dispatcher prolog 127
Hwi dispatcher epilog 143
Hwi dispatcher 265
Hardware Interrupt to Blocked Task 526
Hardware Interrupt to Software Interrupt 271
Swi_enable() 60
Swi_disable() 13
Post Software Interrupt Again 45
Post Software Interrupt without Context Switch 77
Post Software Interrupt with Context Switch 148
Create a New Task without Context Switch 1990
Set a Task Priority without a Context Switch 140
Task_yield() 239
Post Semaphore No Waiting Task 89
Post Semaphore No Task Switch 210
Post Semaphore with Task Switch 308
Pend on Semaphore No Context Switch 58
Pend on Semaphore with Task Switch 272
Clock_getTicks() 13
POSIX Create a New Task without Context Switch 3237
POSIX Set a Task Priority without a Context Switch 119
POSIX Post Semaphore No Waiting Task 105
POSIX Post Semaphore No Task Switch 226
POSIX Post Semaphore with Task Switch 335
POSIX Pend on Semaphore No Context Switch 76
POSIX Pend on Semaphore with Task Switch 288

The benchmark application was built using BIOS.LibType_Custom with the following BIOS.customCCOpts settings: “-mv6740 -mi10 -mo -pdr -pden -pds=238 -pds=880 -pds1110 –program_level_compile -o3”.

As the timer used to run these benchmarks is run at 1/25 the CPU frequency, a deviation of +-25 cycles is to be expected.

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