Baji_Rtc_Toy/managed_components/espressif__dl_fft/benchmark_esp32p4.md

ESP32-P4 fft benchmark:

Test Name	Size	SNR (dB)	RMSE	Time (μs)
1. test dl fft	128	104.9	0.000316	34
	256	107.6	0.000316	76
	512	110.5	0.000316	169
	1024	113.6	0.000316	372
	2048	116.9	0.000316	811
2. test dl ifft	128	85.7	0.000316	40
	256	85.4	0.000316	89
	512	85.4	0.000316	194
	1024	85.4	0.000316	423
	2048	85.2	0.000316	913
3. test dl rfft	128	101.4	0.000316	16
	256	105.3	0.000316	39
	512	108.0	0.000316	79
	1024	110.5	0.000316	191
	2048	113.9	0.000316	376
4. test dl irfft	128	85.5	0.000316	20
	256	85.9	0.000316	47
	512	84.5	0.000316	91
	1024	85.3	0.000316	217
	2048	85.4	0.000316	418
5. test dl fft s16	128	58.8	0.003591	4
	256	54.4	0.007583	8
	512	51.2	0.015255	16
	1024	48.5	0.030612	34
	2048	46.6	0.051513	1083
6. test dl ifft s16	128	50.4	0.001103	4
	256	42.5	0.002179	8
	512	43.1	0.002135	16
	1024	43.4	0.002261	34
	2048	37.9	0.003895	141
7. test dl fft hp s16	128	67.5	0.001742	13
	256	65.8	0.003011	26
	512	63.6	0.005801	55
	1024	63.7	0.009429	115
	2048	67.1	0.007992	1182
8. test dl ifft hp s16	128	69.0	0.000391	9
	256	65.0	0.000466	18
	512	64.5	0.000505	38
	1024	64.9	0.000526	80
	2048	64.4	0.000422	241
9. test dl rfft s16	128	62.5	0.001746	5
	256	61.0	0.003415	10
	512	57.9	0.006776	20
	1024	54.5	0.013945	42
	2048	51.9	0.027488	84
10. test dl irfft s16	128	60.4	0.000535	5
	256	54.5	0.000897	11
	512	51.5	0.000990	22
	1024	46.7	0.001790	44
	2048	41.7	0.003164	89
11. test dl rfft hp s16	128	68.7	0.000965	8
	256	67.4	0.001988	17
	512	67.9	0.002471	32
	1024	64.8	0.004735	68
	2048	66.2	0.007309	141
12. test dl irfft hp s16	128	67.4	0.000372	9
	256	67.4	0.000407	17
	512	66.2	0.000399	32
	1024	66.2	0.000439	70
	2048	64.4	0.000499	138

Note: Only ESP32-P4 revisions greater than 3.0 support acceleration using PIE instructions. The above data was measured on the ESP32-P4 at 400 MHz.

Generation Time: 2026-05-07