microsoft / microsoft/gctoolkit
ZGC missing data
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- Dominant language
- Java
- Stars
- 1.3k
- Forks
- 177
- Avg merge
- 1d 11h
- Merged PRs (30d)
- 3
Description
ZGC missing data: # Safepoints
DestroyDetachedPages, PrepareRelocationSet from concurrent times
mark summary (Mark: 1 stripe(s), 2 proactive flush(es), 1 terminate flush(es), 1 completion(s), 0 continuation(s) )
nMethods (registered/unregistered)
References
Metaspace: parsing exists but most probably has some bug, so comes as null
relocation info
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the ZGC log parsing entry point and compare how Safepoints, concurrent times, mark summaries, nMethods, References, Metaspace, and relocation info are handled. Reproduce the missing fields with a representative ZGC log and inspect the existing Metaspace parsing, which the issue identifies as a likely source of null data. Done means the affected sections are populated correctly and covered by the project's parser tests.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- performance, tooling
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100