IntersectMBO/plutus

Experiment: replace builtin type Strict Bytestring -> ShortByteString

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#6,052 opened on May 17, 2024

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Good first issueInternaloptimizationstatus: triaged

Description

As plutus user I want to have fast plutus execution. Perhaps changing strict bytestrings to short bytestrings may improve the performance. This change should not have any observable difference from existing plutus scripts, so it should be (in principle) backwards compatible with older plutus versions.

Acceptance Criteria:

change universe type to be shortbytestring

change all builtins denotations to operate on bytestrings directly.

(optional) add a benchmark that runs exclusively many bytestring operations

run plutus-benchmarks again and compare to see if it is indeed faster

(optional) replay the whole chain to see if anything changed in cek execution?

Contributor guide

Tech stack
None
Domain
backendperformance
Issue type
performance
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Haskell proficiencyUnderstanding of Plutus internalsFamiliarity with bytestring types
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
First, locate the Universe type in the plutus core package (likely in src/PlutusCore/Data.hs or similar). Then identify all builtins denotations that operate on bytestrings, which are defined across multiple files. The change involves replacing Data.ByteString with Data.ByteString.Short for these types. Review the existing benchmarks in plutus benchmarks to understand how to add a bytestring heavy benchmark. No linked PRs or comments exist, so the contributor must independently explore the code structure.
Experiment: replace builtin type Strict Bytestring -> ShortByteString · IntersectMBO/plutus#6052 | Good First Issue