Re: [yocto] Limiting Yocto Memory Usage
Randy MacLeod <[email protected]> Tue, 21 Jul 2026 11:22:31 -0400
| Newsgroups | org.yoctoproject.lists.yocto |
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| Message-ID | <[email protected]> |
--------------KNiIBS67Vi7Wph0en8umA13l Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by mx0a-0064b401.pphosted.com id 66LDhps92891184 On 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"<[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 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:[email protected] >> Unsubscribe:https://lists.yoctoproject.org/g/yocto/unsub [randy.macleo= [email protected]] >> -=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 <!DOCTYPE html><html><head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8"> </head> <head> =20 </head> <body> <div class=3D"moz-cite-prefix">On 2026-07-16 04:22, Ulrich =C3=96lman= n via lists.yoctoproject.org wrote:<br> </div> <blockquote type=3D"cite" cite=3D"mid:[email protected]"> <pre wrap=3D"" class=3D"moz-quote-pre">Hey Luis, On Fri, Jul 10 2026 at 15:26 -0600, "Luis Merayo via lists.yoctoproj= ect.org" <a class=3D"moz-txt-link-rfc2396E" href=3D"mailto:luis.mera= [email protected]"><luis.merayo=3Dridgerun.com@= lists.yoctoproject.org></a> wrote: </pre> <blockquote type=3D"cite"> <pre wrap=3D"" class=3D"moz-quote-pre">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? </pre> </blockquote> <pre wrap=3D"" class=3D"moz-quote-pre">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</pre> </blockquote> <p><br> </p> <p>Hi Ulrich,<br> <br> Using systemd-run is something that I've been meaning to try so it's good to hear that you're doing it.</p> <p>Do you have any experiences to share about this approach ?<br> Do you do world builds?<br> Do you run more than one systemd-run build on a given machine?<br> <br> <br> Of course it doesn't prevent bitbake from pushing the cgroup contained system <br> harder that it can handle and bitbake doesn't have any feedback so that's something<br> to consider when doing the jobserver or free memory build regulation work.</p> <p>../Randy</p> <p><br> </p> <blockquote type=3D"cite" cite=3D"mid:[email protected]"> <pre wrap=3D"" class=3D"moz-quote-pre"> </pre> <blockquote type=3D"cite"> <pre wrap=3D"" class=3D"moz-quote-pre">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. </pre> <br> <fieldset class=3D"moz-mime-attachment-header"></fieldset> <pre wrap=3D"" class=3D"moz-quote-pre">-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D- Links: You receive all messages sent to this group. View/Reply Online (#66645): <a class=3D"moz-txt-link-freetext" href=3D"ht= tps://lists.yoctoproject.org/g/yocto/message/66645">https://lists.yoctopr= oject.org/g/yocto/message/66645</a> Mute This Topic: <a class=3D"moz-txt-link-freetext" href=3D"https://lists= .yoctoproject.org/mt/120272854/3616765">https://lists.yoctoproject.org/mt= /120272854/3616765</a> Group Owner: <a class=3D"moz-txt-link-abbreviated" href=3D"mailto:yocto+o= [email protected]">[email protected]</a> Unsubscribe: <a class=3D"moz-txt-link-freetext" href=3D"https://lists.yoc= toproject.org/g/yocto/unsub">https://lists.yoctoproject.org/g/yocto/unsub= </a> [<a class=3D"moz-txt-link-abbreviated" href=3D"mailto:randy.macleod@= windriver.com">[email protected]</a>] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- </pre> </blockquote> </blockquote> <p><br> </p> <pre class=3D"moz-signature" cols=3D"72">--=20 # Randy MacLeod # Wind River Linux</pre> </body> </html> --------------KNiIBS67Vi7Wph0en8umA13l--