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Learn about benchmarking and weight.

§FRAME Benchmarking and Weights.

Notes:

On Weight as a concept.

  • Why we need it. Super important. People hate this. We need to argue why it is worth it.
  • Axis of weight: PoV + Time.
  • pre dispatch weight vs. metering and post dispatch correction.
    • mention that we will do this for PoV
    • you can manually refund using DispatchResultWithPostInfo.
  • Technically you can have weights with any benchmarking framework. You just need one number to be computed pre-dispatch. But FRAME gives you a framework for this.
  • improve documentation of #[weight = ..] and #[pallet::weight(..)]. All syntax variation should be covered.

On FRAME benchmarking machinery: