Module polkadot_sdk_docs::reference_docs::frame_benchmarking_weight

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:

• Component analysis, why everything must be linear.

• How to write benchmarks, how you must think of worst case.

• How to run benchmarks.

• https://www.shawntabrizi.com/assets/presentations/substrate-storage-deep-dive.pdf