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2026-07-16 04:22, Ulrich =C3=96lmann via lists.yoctoproject.org wrote: > Hey Luis, > > On Fri, Jul 10 2026 at 15:26 -0600, "Luis Merayo via 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=3DCPUWeight=3D \ > --property=3DIOWeight=3D \ > --property=3DMemoryHigh=3D \ > --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 Hi Ulrich, Using systemd-run is something that I've been meaning to try so it's=20 good to hear that you're doing it. Do you have any experiences to share about this approach ? Do you do world builds? Do you run more than one systemd-run build on a given machine? Of course it doesn't prevent bitbake from pushing the cgroup contained=20 system harder that it can handle and bitbake doesn't have any feedback so=20 that's something to consider when doing the jobserver or free memory build regulation work. ../Randy > > >> 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 na= med 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 att= achments, delete this email message and any >> attachments immediately. >> >> >> >> -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- >> Links: You receive all messages sent to this group. >> View/Reply Online (#66645):https://lists.yoctoproject.org/g/yocto/mess= age/66645 >> Mute This Topic:https://lists.yoctoproject.org/mt/120272854/3616765 >> Group Owner:yocto+owner@lists.yoctoproject.org >> Unsubscribe:https://lists.yoctoproject.org/g/yocto/unsub [randy.macleo= d@windriver.com] >> -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- >> --=20 # Randy MacLeod # Wind River Linux --------------KNiIBS67Vi7Wph0en8umA13l Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by mx0a-0064b401.pphosted.com id 66LDhps92891184 =20
On 2026-07-16 04:22, Ulrich =C3=96lman= n via lists.yoctoproject.org wrote:
Hey Luis,

On Fri, Jul 10 2026 at 15:26 -0600, "Luis Merayo via lists.yoctoproj=
ect.org" <luis.merayo=3Dridgerun.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 Bitbak=
e 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


Hi Ulrich,

Using systemd-run is something that I've been meaning to try so it's good to hear that you're doing it.

Do you have any experiences to share about this approach ?
Do you do world builds?
Do you run more than one systemd-run build on a given machine?


Of course it doesn't prevent bitbake from pushing the cgroup contained system 
harder that it can handle and bitbake doesn't have any feedback so that's something
to consider when doing the jobserver or free memory build regulation work.

../Randy





Could these three variable=
s 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 app=
licable law. If you are not the intended
recipient, do not read, copy, or forward this email message or any attach=
ments, delete this email message and any
attachments immediately.




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--=20
# Randy MacLeod
# Wind River Linux
--------------KNiIBS67Vi7Wph0en8umA13l--