ref-fvm

ref-fvm copied to clipboard

We currently use the default of 20k but it sounds like that reserves enough memory for 20k elements up-front even if they aren't used, which is something we should charge...

Stebalien

Limits/authentication by actor "type"

1

In nv16 (M1), the FVM itself has a list of all builtin actors, allowing actors to resolve code CIDs to actor "type" (see https://github.com/filecoin-project/ref-fvm/issues/342). However, this isn't sustainable: 1. ~It's...

Stebalien

KAMT: Remove or change mapping of integers to keys

2

Right now we map integers to KAMT keys by encoding them with "native endian": 1. This is non-portable, but almost always going to be little-endian. 2. Little endian is never...

Stebalien

While debugging an issue with @travisperson, we turned on `RUST_BACKTRACE=1` and noticed a deep wasmtime backtrace which we weren't expecting. We should figure out why this is happening. (There wasn't...

Stebalien

GAS: Benchmark framework to determine effects of gas changes

1

We need a basic framework to determine the effects of FVM and actor changes on gas fees. Specifically, we need a dual execution benchmarking framework in lotus that can execute...

Stebalien

Memory Gas Costs

5

We need to know: - Cost to randomly read one word. - Cost to randomly write one word. - Write cost per byte (bulk). - Read cost per byte (bulk)....

Stebalien

We have a few places where we can potentially reduce gas fees: 1. When opening blocks, we can charge the first time the block was read during the current transaction...

Stebalien

Guarantee availability of some well-known IPLD blocks

1

It would be nice to be able to just assume that the following IPLD blocks are always available (and maybe even charge less for reading/writing them?): - Empty CBOR array....

Stebalien