Controller Tuning

You can now configure some tunables for the controller services in the UI on the Admin/Tuning page. The defaults should generally be acceptable. There are some settings that are directly related to the hardware that is running the SwiftStack controller.

We recommend the following settings:

  • Worker/Background-daemon counts : between one and two times the count of cores.
  • DB shared memory cache size 20% of controller installed physical RAM or 512 MB, whichever is larger.
  • You should not change the other settings unless you experience some problem, and SwiftStack Support recommends a change.