Cold Start Profiling

This is the result of an impromptu profiling effort to reduce start-up time.

Ultimate Goal

• 450ms

Source

https://github.com/FujiNetWIFI/fujinet-firmware/blob/master/src/main.cpp

Results

Line	ms	Description
152	3	Immediately after start
165	18	nvs_flash_init()
194	19	check_hardware_ver()
196	19	fnKeyManager.setup()
199	19	fnLedManager.setup()
200	430	fsFlash.start()
202	507	fnSDFAT.start()
208	508	crypto.setkey()
212	588	Config.load()
216	760	theFuji.setup()

theFuji.setup()

• https://github.com/FujiNetWIFI/fujinet-firmware/blob/master/lib/device/sio/fuji.cpp#L2122

Method is different than above. Instead, we return at different line numbers.

Line	ms	Description
2127	589	_sio_bus = siobus;
2129	589	populate_slots_from_config();
2131	761	insert_boot_device(Config.get_general_boot_mode())