Answer
PID cgroups apply limits on the number of processes so containers cannot consume all system PIDs.
Quick Answer
Docker uses PID cgroups to limit the number of processes a container can create. If a container spawns processes without bound (a fork bomb), PID cgroups cap the total and prevent the runaway from affecting the host or other containers. Set with --pids-limit on docker run.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ