12.1
ken/TL2024
ken/tuningfonts
lazarus
plabs/newcss
python3.11
rahul/power-profiles-daemon
renodr/vulkan-addition
trunk
xry111/llvm18
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Last change
on this file since b6d54494 was b6d54494, checked in by Xi Ruoyao <xry111@…>, 8 months ago |
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building-notes: Note how to use cgroup for limiting resource usage
We were saying "-jN means using N cores (or N threads)". This is
completely wrong. "-jN" only tells the building system to run N jobs
simultaneously, but each job can start their own subprocesses or threads
and there is no way for the building system to know how many
subprocesses or threads a job will start.
This caused a lot of misunderstandings and encouraged users to wrongly
blame building systems.
Fix the description of -jN, and add how to use cgroup to control the
usage of CPU cores and system RAM.
On a systemd-based system, systemd is the cgroup manager and manually
operating on cgroups may puzzle systemd. So use systemd-run for
creating and setting up cgroup. On a sysv-based system create and set
up the cgroup manually.
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File size:
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| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE note PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
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| 4 | <!-- Automatically generated by kernel-config.py
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| 5 | DO NOT EDIT! -->
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| 6 | <screen><emphasis role='blue'>G</emphasis>eneral setup --->
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| 7 | [*] <emphasis role='blue'>C</emphasis>ontrol Group support ---> [CGROUPS]
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| 8 | [*] M<emphasis role='blue'>e</emphasis>mory controller [MEMCG]
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| 9 | [*] <emphasis role='blue'>C</emphasis>puset controller [CPUSETS]</screen>
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