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HFT Core Systems

HFT CORE SYSTEMS

cgroup v2, cpusets, memory nodes, and least privilege

Lesson 30 of 96Phase 03: Linux determinism
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The written objectives and hands-on lab are available now.

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Learning objectives

What you should understand

  1. Constrain CPU and memory placement with cgroup v2
  2. Understand cpuset hierarchy and effective masks
  3. Grant only the privileges needed for tuning

Lab

Hands-on exercise

Launch the benchmark lab inside a constrained cgroup.

Deliverable

Evidence of completion

A least-privilege service configuration with placement verification.

Prerequisite
EP 29

Phase 03

Linux determinism

Full curriculum
21Scheduler classes and real-time hazards22Affinity, topology, SMT, and migration23CPU isolation as a system configuration24Interrupts, NAPI, softirqs, and NIC queues25Memory locking and prefaulting26Power management, turbo, C-states, and thermal behavior27Finding OS noise with rtla, ftrace, and perf28System calls and context switches are different things29Shared memory IPC with explicit ownership30cgroup v2, cpusets, memory nodes, and least privilege31Asynchronous logging: page cache, direct I/O, and io_uring32Phase gate: reproducible low-jitter host profile