vmware / vmware/splinterdb

Optimization: avoid polymorphism overhead in merge

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Dominant language
C
Stars
732
Forks
67
PR merge metrics
No merged PRs in 30d

Description

Because merge is the most performance critical part of the code on the write path, perhaps key comparison and iterator function should be called directly rather than through polymorphic pointers.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No files or tests are named. Start by locating the merge implementation and the key-comparison and iterator interfaces mentioned in the issue, then establish a write-path performance baseline. Done means reducing polymorphism overhead while preserving merge behavior and demonstrating the change with performance measurements.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
databases, performance
Issue type
Refactor
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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