Limited number of KEYS for NVS partition

[Kowshik_Bevara]

Hi,

In the partition table, I assigned 32KB to NVS in ESP32S3, but while using the NVS I tried to create 1000+keys with the value of 2 bytes and I got an error saying NOT enough space for storage. Considering each key to be of 2 bytes it accumulates to be only 2000 bytes.

As per my understanding, it seems that storing keys also consumes some space but even if I consider 4 bytes for each key it takes 4000 bytes more.

Does this mean that there is a limit to the number of keys in the NVS partition? If so why is that?

Please help me understand the way that NVS storage is being used.

Thanks in Advance.

[ESP_Sprite]

Not only the value gets stored, the key as well, as well as some other metadata. Aside that, each page (sector) of NVS can only store a limited amount of values. See the NVS doc page for how exactly it works.