Re: [yocto] Limiting Yocto Memory Usage

Hey Luis,

On Fri, Jul 10 2026 at 15:26 -0600, "Luis Merayo via lists.yoctoproject.org=
" <[email protected]> wrote:
> Hi,
>
> I would like to know if there is a way to limit Bitbake's Memory usage
> to a specific percentage of the available RAM. For example, can the
> Yocto build be limited to use a maximum of 70% of RAM?

if you are doing your Bitbake work on a machine running a systemd based
Linux distribution you could simply do something like

  $ systemd-run \
       --user \
       --scope \
       --property=3DCPUWeight=3D<YOUR_CPUWEIGHT> \
       --property=3DIOWeight=3D<YOUR_IOWEIGHT> \
       --property=3DMemoryHigh=3D<YOUR_MEMORYHIGH> \
       --property=3DOOMPolicy=3Dkill \
       --unit=3D"bitbake-run" \
       bitbake [...]

to somewhat limit the resources, see systemd.resource-control(5) and
systemd.scope(5) for details regarding the used parameters.

Best regards,
Ulrich


> Could these three variables achieve this?
>
>  BB_PRESSURE_MAX_CPU, BB_PRESSURE_MAX_IO , BB_PRESSURE_MAX_MEMORY
>
> I see the range for these variables is from 1 to 1000000, so I would
> like to understand if there is a way to specify their values as a
> function of the available RAM.
>
> Regards,
>
> Luis
>
>
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