uLisp - Performance

Performance

Overview

Other SAMD21-based ARM M0 boards, such as the MKRZero, Adafruit Gemma M0, Adafruit ItsyBitsy M0, and Adafruit Feather M0 Adalogger are similar in performance to the Arduino Zero.

Other SAMD51-based ARM M4 boards, such as the Adafruit ItsyBitsy M4 and Adafruit Feather M4, are similar in performance to the Adafruit Metro M4.

Other RP2040-based boards, such as the Raspberry Pi Pico W and Adafruit Feather RP2040, are similar in performance to the Raspberry Pi Pico.

Other K210-based RISC-V boards, such as the Sipeed MAiX One Dock and Sipeed MAiX BiT, are similar in performance to the Sipeed Maixduino.

Platforms

The following table gives a summary of the performance of the different boards supported by the latest release of uLisp for each platform:

AVR-Nano version

Platform	Processor	Clock	Current	Objects	Image	Code	GC time	Tak	Q2
Arduino Uno	ATmega328	16 MHz	54 mA	320	256	†	0.5 ms	64.6 s
Arduino Nano	ATmega328	16 MHz		319	256	†	0.5 ms	63.3 s
Arduino Nano Every	ATmega4809	20 MHz		1066	64	†	1.4 ms	53.3 s	105 s
ATmega4809 Curiosity Nano	ATmega4809	20 MHz		1066	64	†	1.4 ms	49 s	112 s

AVR version

Platform	Processor	Clock	Current	Objects	Image	Code	GC time	Tak	Q2
Arduino Mega 2560	ATmega2560	16 MHz	90 mA	1344	1024	†	2.1 ms	52.9 s	†
Lisp Badge	ATmega1284	16 MHz		2944	All	96	4.7 ms	54.6 s	109 s
Lisp Badge LE	AVR128DB48	24 MHz		2800	All	96	2.5 ms	34.9 s	72.1 s
AVR128DA48 Curiosity Nano	AVR128DA48	24 MHz	22 mA	2920	All	96	2.6 ms	33.1 s	69.3 s
AVR128DB48 Curiosity Nano	AVR128DB48	24 MHz	22 mA	2920	All	96	2.6 ms	33.1 s	68.0 s

ARM version

Platform	Processor	Clock	Current	Objects	Image	Code	GC time	Tak	Q2
Arduino Zero	ATSAMD21	48 MHz	13 mA	2500	All	128	2.1 ms	11.4 s	24.3 s
Arduino MKRZero	ATSAMD21	48 MHz	23 mA	2640	All	128	2.2 ms	14.2 s	32.8 s
Adafruit Gemma M0	ATSAMD21	48 MHz		2816	All	128	2.4 ms	14.9 s	33.8 s
Adafruit QT-Py SAMD21	ATSAMD21	48 MHz		2816	All	128	1.3 ms	14.9 s	33.8 s
Adafruit ItsyBitsy M0	ATSAMD21	48 MHz		2816	All	128	1.3 ms	14.9 s	33.8 s
Adafruit Feather M0	ATSAMD21	48 MHz		2816	All	128	1.3 ms	14.9 s	34.3 s
Adafruit Neo Trinkey	ATSAMD21	48 MHz	14 mA	2816	All	128	1.2 ms	13.3 s	29.5 s
Seeed Studio XIAO SAMD21	ATSAMD21	48 MHz		2816	All	128	2.4 ms	14 s	41 s
Adafruit Grand Central M4	ATSAMD51	120 MHz	33 mA	28800	All	256	4.6 ms	3.9 s	8.6 s
Adafruit Metro M4	ATSAMD51	120 MHz		20480	All	256	3.3 ms	4.4 s	9.8 s
Adafruit ItsyBitsy M4	ATSAMD51	120 MHz		20608	All	256	3.3 ms	4.4 s	9.9 s
Adafruit Feather M4	ATSAMD51	120 MHz	24 mA	20608	All	256	3.3 ms	3.8 s	8.6 s
Adafruit PyGamer/PyBadge	ATSAMD51	120 MHz		20608	All	256	3.3 ms	4.2 s	10.2 s
Seeed Studio Wio Terminal	ATSAMD51	120 MHz		20480	All	256	3.3 ms	5.3 s	13.0 s
BBC Micro:bit	nRF51822	16 MHz	21 mA	1344	*	64	2.2 ms	36.8 s	79.5 s
Calliope mini	nRF51822	16 MHz		3328	*	64	5.3 ms	34 s	82 s
BBC Micro:bit V2	nRF52833	64 MHz		12927	*	128	6.7 ms	8.6 s	18.9 s
Adafruit CLUE	nRF52840	64 MHz		21120	All	256	7.8 ms	12.7 s	31.8 s
Adafruit ItsyBitsy nRF52840	nRF52840	64 MHz		21120	All	256	6.8 ms	12.6 s	31.4 s
Seeed Studio XIAO nRF52840	nRF52840	64 MHz	11 mA	21120	All	256	5.9 ms	10.7 s	26.3 s
Circuit Playground Bluefruit	nRF52840	64 MHz	19 mA	21120	All	256	5.9 ms	10.6 s	26.7 s
Raspberry Pi Pico	RP2040	133 MHz	24 mA	23000	All	256	4.0 ms	5.9 s	14.6 s
Raspberry Pi Pico W	RP2040	133 MHz		23000	All	256	4.0 ms	4.8 s	12.9 s
Adafruit Feather RP2040	RP2040	133 MHz		23000	All	256	4.0 ms	5.0 s	13.1 s
Feather RP2040 Adalogger	RP2040	133 MHz	33 mA	23000	All	256	4.0 ms	6.1 s	15.0 s
Adafruit Qt-Py RP2040	RP2040	133 MHz		22911	All	256	3.7 ms	8.9 s	22.3 s
Seed Studio XIAO RP2040	RP2040	133 MHz		22911	All	256	3.7 ms	9.2 s	23.1 s
Raspberry Pi Pico 2 ARM Raspberry Pi Pico 2 RISC-V	RP2350 RP2350	150 MHz 150 MHz	20 mA 19 mA	47000 42500	All All	256 256	5.0 ms 4.3 ms	5.0 s 3.9 s	12.3 s 10.4 s
Pimoroni Tiny 2350 ARM Pimoroni Tiny 2350 RISC-V	RP2350 RP2350	150 MHz 150 MHz	23 mA 23 mA	46500 42500	All All	256 256	5.0 ms 4.3 ms	4.5 s 5.0 s	11.5 s 11.8 s
Pimoroni Pico Plus 2 ARM Pimoroni Pico Plus 2 RISC-V Pimoroni Pico Plus 2 ARM ¶ Pimoroni Pico Plus 2 RISC-V ¶	RP2350 RP2350 RP2350 RP2350	150 MHz 150 MHz 150 MHz 150 MHz	21 mA 20 mA 24 mA 23 mA	46500 42000 1000000 1000000	All All All All	256 256 256 256	5.0 ms 4.3 ms 1.0 s 1.0 s	3.8 s 3.6 s 7.8 s 7.8 s	9.2 s 8.3 s 18.7 s 17.2 s
Maxim MAX32620FTHR	MAX32620	96 MHz	6 mA	24704	*	256	5.4 ms	6.1 s	13.5 s
Teensy 4.0	iMXRT1062	600 MHz	101 mA	60000	All	256	1.3 ms	0.4 s	0.87 s
Teensy 4.1	iMXRT1062	600 MHz	110 mA	60000	All	256	1.3 ms	0.4 s	0.88 s
Arduino UNO R4 Minima	RA4M1	48 MHz	34 mA	2032	1024	128	0.9 ms	10.1 s	22.5 s
Arduino UNO R4 WiFi	RA4M1	48 MHz		1610	1024	128	0.8 ms	11.0 s	22.8 s

ESP version

Platform	Processor	Clock	Current	Objects	Image	Code	GC time	Tak	Q2
Adafruit ESP32 Feather	ESP32	240 MHz		9216	All	†	0.4 ms	8.1 s	22.1 s
Adafruit ESP32 Feather V2 Adafruit ESP32 Feather V2 ¶	ESP32 ESP32	240 MHz 240 MHz	60 mA 63 mA	9500 250000	All All	† †	0.4 ms 156 ms	10 s 8.9 s	26.0 s 21.9 s
Adafruit QT Py ESP32 Pico	ESP32	240 MHz		260000	All	†	156 ms	7.9 s	20.9 s
Muse Lab ESP32 Key	ESP32	240 MHz	59 mA	9500	All	†	0.5 ms	6.3 s	16.8 s
Adafruit ESP32-S2 Feather Adafruit ESP32-S2 Feather ¶	ESP32-S2 ESP32-S2	240 MHz 240 MHz	45 mA 47 mA	6500 250000	All All	† †	0.4 ms 132 ms	2.5 s 4.1 s	5.4 s 8.6 s
Adafruit ESP32-S2 TFT Feather Adafruit ESP32-S2 TFT Feather ¶	ESP32-S2 ESP32-S2	240 MHz 240 MHz	48 mA 54 mA	6500 250000	All All	† †	0.4 ms 131 ms	2.4 s 4.2 s	5.2 s 9.1 s
Adafruit ESP32-S2 QT-Py	ESP32-S2	240 MHz		8160	All	†	0.6 ms	2.7 s	6.0 s
Unexpected Maker Feather S2	ESP32-S2	240 MHz		8160	All	†	0.6 ms	2.7 s	6.0 s
ESP32-S2-Soala-1 WROVER	ESP32-S2	240 MHz		260000	All	†	137 ms	5.4 s	13.6 s
ESP32-S2-Soala-1 WROOM	ESP32-S2	240 MHz		8160	All	†	0.6 ms	3.8 s	10.0 s
Muse Lab ESP32-S2 Key	ESP32-S2	240 MHz	50 mA	8160	All	†	0.6 ms	2.4 s	5.8 s
ESP32-C3-DevKitM-1	ESP32-C3	160 MHz	39 mA	9216	All	†	0.9 ms	4.8 s	12.1 s
ESP32-S3-DevKitM-1	ESP32-S3	240 MHz	73 mA	25000	All	†	1.1 ms	5.1 s	13.5 s
LilyGo T-Deck LilyGo T-Deck ¶	ESP32-S3 ESP32-S3	240 MHz 240 MHz	145 mA 145 mA	25000 1000000	All All	† †	1.1 ms 230 ms	2.1 s 3.3 s	4.9 s 6.9 s
M5Stack Cardputer	ESP32-S3	240 MHz	86 mA	23750	All	†	1.0 ms	2.1 s	5.3 s

RISC-V version

Platform	Processor	Clock	Current	Objects	Image	Code	GC time	Tak	Q2
Sipeed Maixduino	K210	400 MHz	145 mA	500000	*	512	44 ms	1.5 s	3.1 s
Sipeed MAiX BiT	K210	400 MHz	91 mA	500000	*	512	44 ms	1.5 s	3.0 s

Key

Current gives the active current consumption at 5V when powered from the USB port and running a benchmark.

Objects gives the number of Lisp objects of storage available, each equivalent to 4 bytes on the 8/16-bit platforms and 8 bytes on the 32-bit platforms.
¶ shows with PSRAM enabled, where available.

Image gives the number of objects that can be saved to non-volatile storage using save-image, or All which means that the whole workspace can be saved.
* These platforms don't provide non-volatile storage for saving an image, but you can save images to an SD card with a suitable interface.

Code gives the number of bytes of machine code that can be stored by the assembler, by default, on AVR, ARM, or RISC-V platforms.
† means not available.

GC time gives the time taken for a garbage collection.

Tak gives the time taken to calculate the recursive integer function (tak 18 12 6); see Benchmarks.

Q2 gives the time taken to calculate the recursive integer function (q2 7 8); see Benchmarks.

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