mbw ☆

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Description:
Memory Bandwidth Benchmark

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: System utilities

Tags: benchmark memory performance system-utility profiling

Install: brew install mbw

About:
Mbw is a command-line utility designed to measure memory bandwidth on multi-core systems. It works by performing parallel memory copy operations and calculating the throughput, providing insight into the system's memory subsystem performance. This tool is valuable for diagnosing performance bottlenecks and understanding hardware capabilities.

Key Features:

Parallel memory copy operations for multi-core testing
Simple command-line interface with configurable parameters
Provides raw memory bandwidth measurements in MB/s or GB/s
Helps identify memory subsystem bottlenecks

Use Cases:

Benchmarking server memory performance before deployment
Comparing different RAM configurations or CPU architectures
Diagnosing memory-bound application performance issues

Alternatives:

stream – STREAM is a more comprehensive synthetic benchmark, while mbw is simpler and quicker to run for basic bandwidth checks.
lmbench – lmbench is a broader suite for local benchmarking, whereas mbw focuses specifically on memory bandwidth.

Version History

Detected	Version	Rev	Change	Commit
Sep 16, 2025 2:19am		0	VERSION_BUMP	b6b2d4b9
Sep 14, 2024 3:44pm		0	VERSION_BUMP	cb5c1761