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 bcfaad0 was b6d54494, checked in by Xi Ruoyao <xry111@…>, 9 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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