CPUMap - view and edit CPU affinities

About

CPUMap is a simple graphical tool to view and edit CPU affinities of processes on a Linux system.

This is useful when benchmarking and profiling for performance issues, and in some cases to improve performance (e.g. to force a game to use only cores with more cache on some AMD CPUs).

Note that manually controlling CPU affinity is not likely to improve performance if you don't know what you are doing - in most cases, it's best to leave the OS scheduler to do its work.

Features

• OS support:
  • Linux
  • May work on other OS's (based on the hwloc library) but only Linux has been tested so far.
• Fuzzy-search processes by name
• Hierarchical view of CPU topology with logical CPU cores ('hyperthreads')
• Specify cores a process and each individual thread of that process can use
  • Manually or using a 'thread order' - e.g. one thread per core
• Run mode
  • Run a command with specified CPU affinities
  • Control which process launched by the command should be affected
• View mode:
  • See affinities for a running process
  • Click a core to enter edit mode
• Edit mode
  • Specify affinities for a running process

Install

cargo install cpumap

(TODO binary packages)

License

Licensed under the MIT license, see file LICENSE.