Re: [yocto] Limiting Yocto Memory Usage

["Ulrich Ölmann" <u.oelmann@pengutronix.de>]

Hey Luis,

On Fri, Jul 10 2026 at 15:26 -0600, "Luis Merayo via lists.yoctoproject.org" <luis.merayo=ridgerun.com@lists.yoctoproject.org> 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=CPUWeight=<YOUR_CPUWEIGHT> \
       --property=IOWeight=<YOUR_IOWEIGHT> \
       --property=MemoryHigh=<YOUR_MEMORYHIGH> \
       --property=OOMPolicy=kill \
       --unit="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
>
>
> This email and any attachments are intended for the sole use of the named recipient(s) and contain(s) confidential
> information that may be proprietary, privileged, or copyrighted under applicable law. If you are not the intended
> recipient, do not read, copy, or forward this email message or any attachments, delete this email message and any
> attachments immediately.
>
> -=-=-=-=-=-=-=-=-=-=-=-
> Links: You receive all messages sent to this group.
> View/Reply Online (#66637): https://lists.yoctoproject.org/g/yocto/message/66637
> Mute This Topic: https://lists.yoctoproject.org/mt/120213825/3618626
> Group Owner: yocto+owner@lists.yoctoproject.org
> Unsubscribe: https://lists.yoctoproject.org/g/yocto/unsub [u.oelmann@pengutronix.de]
> -=-=-=-=-=-=-=-=-=-=-=-
-- 
Pengutronix e.K.                           | Ulrich Ölmann               |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |