numactl ☆

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Description:
NUMA support for Linux

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: System utilities

Tags: numa linux system-utility performance hpc memory-management

Install: brew install numactl

About:
Numactl is a set of command-line utilities for controlling NUMA (Non-Uniform Memory Access) policy for processes or shared memory. It allows administrators to bind processes to specific CPU cores and allocate memory from specific nodes, optimizing performance on multi-socket servers. This helps reduce memory access latency and improve application throughput in high-performance computing environments.

Key Features:

numactl: Run programs with modified NUMA policy
numademo: Demonstrate NUMA effects and memory policies
numastat: Show NUMA memory allocation statistics
libnuma: C library for NUMA API support

Use Cases:

Optimizing database performance by binding to local memory nodes
Running HPC applications with specific CPU and memory affinity
Analyzing NUMA topology and memory access patterns

Alternatives:

taskset – taskset only handles CPU affinity, while numactl also manages memory placement policies

Version History

Detected	Version	Rev	Change	Commit
Oct 26, 2024 9:34pm		0	VERSION_BUMP	27755433