# stress > A tool to stress test CPU, memory, and IO on a Linux system. > More information: . - Spawn 4 workers to stress test CPU: `stress -c {{4}}` - Spawn 2 workers to stress test IO and timeout after 5 seconds: `stress -i {{2}} -t {{5}}` - Spawn 2 workers to stress test memory (each worker allocates 256M bytes): `stress -m {{2}} --vm-bytes {{256M}}` - Spawn 2 workers spinning on write()/unlink() (each worker writes 1G bytes): `stress -d {{2}} --hdd-bytes {{1GB}}`