Need help interpreting memory report

RE: Need help interpreting memory report

Håkon Alseth — Tue, 04 Jul 2023 09:16:50 GMT

Hi,

BT mesh (and any other protocols, for instance openthread) will require a certain footprint to support the targeted protocol.

If you take a given sample, let's say samples/bluetooth/mesh/light_switch, and compile it with the uart/log kconfig's that I posted, you should see the minimum requirement of that specific sample.

Kind regards,

Håkon

RE: Need help interpreting memory report

Ubaid_M — Tue, 04 Jul 2023 09:00:45 GMT

Yes Håkon Alseth

[quote userid="2115" url="~/f/nordic-q-a/101429/need-help-interpreting-memory-report/434391"] (CONFIG_LOG=n, CONFIG_UART_CONSOLE=n, CONFIG_CONSOLE=n).[/quote]

This I have already done,

What I observed was that in v1.9.1 BLE + BLE-Mesh + statically linked libraries are totaling to 70% of ROM consumption.

My application is just under 15%.

So how can I bring the 70% down..?
It is quite huge.

RE: Need help interpreting memory report

Håkon Alseth — Tue, 04 Jul 2023 08:55:49 GMT

Hi,

Try to disable features that you do not need, for instance all logging (CONFIG_LOG=n, CONFIG_UART_CONSOLE=n, CONFIG_CONSOLE=n).

Also ensure that you are compiling for size optimization (default setting unless explicitly changed).

Kind regards,

Håkon

RE: Need help interpreting memory report

Ubaid_M — Tue, 04 Jul 2023 08:49:38 GMT

Thanks Håkon Alseth

I am struggling with high ROM consumption.
Can you please suggest me something to look for build file size optimization..?

RE: Need help interpreting memory report

Håkon Alseth — Tue, 04 Jul 2023 08:15:01 GMT

Hi,

Those are nameless symbols, for instance coming from libraries, RO data, DATA, string sections, etc.

Kind regards,

Håkon

RE: Need help interpreting memory report

Ubaid_M — Tue, 04 Jul 2023 06:16:55 GMT

Thanks Håkon Alseth ,

Further,

Can you please help me understand what comprises of the "Hidden" folder memory occupancy..?

RE: Need help interpreting memory report

Håkon Alseth — Mon, 03 Jul 2023 12:54:49 GMT

Hi Ubaid,

It is hard to state if this will change the flash usage of your project, unfortunately.

I would recommend that you check with your firmware and its configuration.

Kind regards,

Håkon

RE: Need help interpreting memory report

Ubaid_M — Mon, 03 Jul 2023 12:06:51 GMT

Hi Håkon Alseth ,

Thanks, I am using nCS v1.9.1
Will upgrading the nCS to v2.4.0 provide me with build file size (ROM) optimization for these static libraries..?
Because I can see that these statically linked libraries are consuming 37% of ROM currently in v1.9.1

I read that v2.4.0 provides PSA which optimizes build file size.

Thanks,

Ubaid

RE: Need help interpreting memory report

Håkon Alseth — Mon, 03 Jul 2023 11:39:01 GMT

Hi,

It is statically linked libraries that are stripped, for instance the softdevice controller / mpsl etc, and smaller dependencies around those symbols.

Kind regards,

Håkon