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Memory Useage Summary?
Posted: Tue Feb 18, 2025 11:14 pm
by klaatu2
ESP32-S3, with 16MB or Flash, and 8MB of PSRAM.
When ESP-IDF v5.4 compiles it produces the summary below:
How does this summary showing 42MB of Total available Flash make sense?
No mention of PSRAM.
No mention of internal ROM
- ESP32 Memory summary.png (18.92 KiB) Viewed 1669 times
Re: Memory Useage Summary?
Posted: Tue Feb 18, 2025 11:28 pm
by chegewara
Hi
- 4 474 552 - is not 42MB
- you have setup 32MB in sdkconfig, i think, because its what the total bytes show
Re: Memory Useage Summary?
Posted: Wed Feb 19, 2025 3:23 am
by klaatu2
I'm not talking about the resulting code size, but rather the total bytes available as shown in the right most column
Re: Memory Useage Summary?
Posted: Wed Feb 19, 2025 3:55 am
by chegewara
Ok, thats fine. But its still 32MB, thats why i said this
- you have setup 32MB in sdkconfig, i think, because its what the total bytes show
Just check with idf.py menuconfig
Re: Memory Useage Summary?
Posted: Sat Feb 22, 2025 1:22 am
by klaatu2
In Menuconfig, its set to 16MB.
Re: Memory Useage Summary?
Posted: Sat Feb 22, 2025 4:02 am
by chegewara
You are correct, idf.py size seems to be broken.
I thought it may be only on P4, but on S3 it shows very odd values too (maybe other models too)
Code: Select all
Memory Type Usage Summary
┏━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━┳━━━━━━━━━━┳━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┓
┃ Memory Type/Section ┃ Used [bytes] ┃ Used [%] ┃ Remain [bytes] ┃ Total [bytes] ┃
┡━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━╇━━━━━━━━━━╇━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━┩
│ Flash Code │ 1312083 │ 15.64 │ 7076493 │ 8388576 │
│ .text │ 1312083 │ 15.64 │ │ │
│ Flash Data │ 376608 │ 1.12 │ 33177792 │ 33554400 │
│ .rodata │ 340736 │ 1.02 │ │ │
│ .bss │ 35616 │ 0.11 │ │ │
│ .appdesc │ 256 │ 0.0 │ │ │
│ DIRAM │ 262932 │ 76.93 │ 78828 │ 341760 │
│ .text │ 171807 │ 50.27 │ │ │
│ .bss │ 70936 │ 20.76 │ │ │
│ .data │ 19964 │ 5.84 │ │ │
│ IRAM │ 16384 │ 100.0 │ 0 │ 16384 │
│ .text │ 15356 │ 93.73 │ │ │
│ .vectors │ 1028 │ 6.27 │ │ │
│ RTC FAST │ 52 │ 0.63 │ 8140 │ 8192 │
│ .force_fast │ 28 │ 0.34 │ │ │
│ .rtc_reserved │ 24 │ 0.29 │ │ │
└─────────────────────┴──────────────┴──────────┴────────────────┴───────────────┘
Total image size: 1861258 bytes (.bin may be padded larger)
with values
Code: Select all
CONFIG_IDF_TARGET="esp32s3"
CONFIG_ESPTOOLPY_FLASHSIZE_4MB=y
- flash size 4MB
- size shows flash code total bytes 8MB
- flash data total bytes 32MB