Memory performance Rules of Thumb

Virtual Memory

• swap
  • swap > 100,000 - too much
  • 10k < swap < 100k - ideal
  • 4k < swap < 10k - low
  • 1k < swap < 4k - very low
  • swap < 1k - reboot ;)

Physical memory

• scan rate
  • 0 - wasted RAM
  • 0 < sr < 200 - ideal
  • 200 < sr < 300 - RAM low
  • sr > 300 - RAM very low