Zephelin benchmarking¶

This chapter demonstrates overhead introduced by Zephelin library based in different variants.

Zephelin Benchmark Results¶

max32690fthr_max32690_m4¶

Benchmark	Cycles	FLASH [B]	RAM [B]	Configs
bench.basic (basic)	7583	4784	18032
bench.basic.instr (basic)	21205802	21496	58780	instr_tracing.conf
bench.basic.tracing (basic)	7583	5048	20624	tracing.conf
bench.basic.zpl (basic)	237038	5080	21576	zpl.conf
bench.dhry (dhrystone)	2025	15176	20412
bench.dhry.instr (dhrystone)	4695733	31880	61420	instr_tracing.conf
bench.dhry.tracing (dhrystone)	2027	15440	22984	tracing.conf
bench.dhry.zpl (dhrystone)	2027	15456	23592	zpl.conf
bench.tflite (tflite)	76433	29720	79276	tflite.conf
bench.tflite.tracing (tflite)	76052	29984	82772	tflite.conf, tracing.conf
bench.tflite.zpl (tflite)	84884	30040	83964	tflite.conf, zpl.conf
bench.threads (threads)	5950517	16216	19672
bench.threads.tracing (threads)	40655082	17128	24252	tracing.conf

stm32f746g_disco_stm32f746xx¶

Benchmark	Cycles	FLASH [B]	RAM [B]	Configs
bench.basic (basic)	7951	4608	18552
bench.basic.instr (basic)	29506628	21312	65848	instr_tracing.conf
bench.basic.tracing (basic)	7951	4800	21164	tracing.conf
bench.basic.zpl (basic)	183986	4864	21916	zpl.conf
bench.dhry (dhrystone)	2125	14976	20936
bench.dhry.instr (dhrystone)	6528969	31744	68484	instr_tracing.conf
bench.dhry.tracing (dhrystone)	2125	15232	23528	tracing.conf
bench.dhry.zpl (dhrystone)	2125	15232	23932	zpl.conf
bench.tflite (tflite)	78292	29568	79804	tflite.conf
bench.tflite.tracing (tflite)	78029	29760	83332	tflite.conf, tracing.conf
bench.tflite.zpl (tflite)	84324	29824	84304	tflite.conf, zpl.conf
bench.threads (threads)	6576133	16832	20244
bench.threads.tracing (threads)	47878785	17536	24856	tracing.conf

Benchmarks¶

ZPL_BENCHMARK_RUN_BASIC¶

Basic Zephelin benchmark (a very inefficient dot product implementaton)

Based on an inefficient dot product implementation. Uses ZPL scopes for tracing.

ZPL_BENCHMARK_RUN_DHRYSTONE¶

Dhrystone Zephelin benchmark

Synthetic benchmark for integer operations. Doesn’t rely on any Zephyr features.

ZPL_BENCHMARK_RUN_TFLITE¶

TFLite-based Zephelin benchmark

Performs inference using a simple TFLite model. Uses ZPL scopes and model tracing.

ZPL_BENCHMARK_RUN_THREADS¶

Threads-based Zephelin benchmark

Features multiple threads performing a dummy operation on a single resource. Uses Zephyr’s mutexes and semaphores.

Configs¶

instr_tracing.conf¶

CONFIG_TRACING=y
CONFIG_INSTRUMENTATION=y
CONFIG_TRACING_CTF=y
CONFIG_TRACING_SYNC=y
CONFIG_TRACING_MUTEX=y
CONFIG_INSTRUMENTATION_BACKEND_TRACING_CORE=y
CONFIG_THREAD_NAME=y
CONFIG_THREAD_MAX_NAME_LEN=20
CONFIG_INSTRUMENTATION_DYNAMIC_TRIGGER=n
CONFIG_MAIN_STACK_SIZE=8196
CONFIG_INSTRUMENTATION_TRIGGER_FUNCTION="benchmark_run"
CONFIG_INSTRUMENTATION_STOPPER_FUNCTION="benchmark_run"

prj.conf¶

CONFIG_TIMING_FUNCTIONS=y

tflite.conf¶

CONFIG_MAIN_STACK_SIZE=3072

CONFIG_TEST_RANDOM_GENERATOR=y
CONFIG_TENSORFLOW_LITE_MICRO=y
CONFIG_CPP=y
CONFIG_STD_CPP17=y
CONFIG_REQUIRES_FLOAT_PRINTF=y

tracing.conf¶

CONFIG_TRACING=y
CONFIG_TRACING_CTF=y
CONFIG_TRACING_SYNC=y
CONFIG_TRACING_MUTEX=y
CONFIG_TRACING_SEMAPHORE=y
CONFIG_TRACING_THREAD=y
CONFIG_TRACING_STACK=y

zpl.conf¶

CONFIG_TRACING=y
CONFIG_TRACING_CTF=y
CONFIG_TRACING_SYNC=y

CONFIG_ZPL=y
CONFIG_ZPL_TRACE=y
CONFIG_ZPL_TRACE_FULL_MODE=y
CONFIG_ZPL_TRACE_FORMAT_CTF=y
CONFIG_ZPL_SCOPE_MARKING=y

Commits¶

Project	Commit
zephelin	64fff76712fb30398962ecad2473a0916ee53281
zephyr	3568e1b6d5cdd51a6b964a2a1d6d29200fea2056

Last update: 2026-05-29