NVS Size Question

[Jasonho]

Hi,

Just wonder does NVS only use half of the configured size?

I have configured the nvs_storage size = 0x2000 ( 8192 bytes)

So sector_count = 2 (4096 / sector)

When I use nvs_calc_free_space() to calculate the free space available when there is no data in the nvs, I only get 4096, which is half of the nvs_storage.


Best,

Jason

[Priyanka]

Hi Jason,

So according to this, one sector is reserved and the rest are available. Since here it's 2 sectors, yes, half is available.

There is also some overhead with each stored element

So it's better to store one large data element that multiple small data elements.

Best Regards,

Priyanka