rr-debugger / rr-debugger/rr

Replay of Firefox reftest-ipc-like tests takes a long time

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Dominant language
C++
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Merged PRs (30d)
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Description

The crashtest-ipc and reftest-ipc suites. Recording doesn't seem to take unusually long, but I've had to abort two replay runs. I also don't remember noticing this before, but there seem to be a lot more -ipc tests enabled now (which is great!).

Contributor guide

Open the contributing guide

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

Start by reproducing replay timing for the crashtest-ipc and reftest-ipc suites and compare it with recording time. Inspect how these suites are enabled and replayed, then identify the source of the excessive replay duration. Done means the slowdown is explained and replay performance is improved or the limiting behavior is documented.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
performance, reverse-engineering, testing-qa
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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