Stream: git-wasmtime

Topic: wasmtime / issue #13931 Add Configurable Variable Fuel Co...

Wasmtime GitHub notifications bot (Jul 22 2026 at 11:21):

d-sonuga opened issue #13931:

Summary

OperatorCost only configures a flat cost for each Wasm operator.
Operations like memory.fill can do variable work and priced with a fixed 1 fuel per byte.
Add configurable per byte/unit costs to OperatorCost for embedders to have control over how the pricing is
done for these kind of instructions.

Wasmtime GitHub notifications bot (Jul 30 2026 at 16:46):

fitzgen added the wasmtime:api label to Issue #13931.

Wasmtime GitHub notifications bot (Jul 30 2026 at 16:46):

fitzgen added the enhancement label to Issue #13931.

Wasmtime GitHub notifications bot (Jul 30 2026 at 20:30):

alexcrichton closed issue #13931:

Summary

OperatorCost only configures a flat cost for each Wasm operator.
Operations like memory.fill can do variable work and priced with a fixed 1 fuel per byte.
Add configurable per byte/unit costs to OperatorCost for embedders to have control over how the pricing is
done for these kind of instructions.

Last updated: Aug 30 2026 at 09:07 UTC