[discussions] rr everywhere
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- Dominant language
- C++
- Stars
- 10.7k
- Forks
- 662
- Avg merge
- 2d 3h
- Merged PRs (30d)
- 2
Description
Can rr work if
- intel hybrid cores on KVM or hyper-v: It seems that PMU won't work if you are in KVM on intel hybrid cores, can anyone confirm that? @rocallahan I learned from your blog that you've built a new computer with an Intel hybrid-core processor.
[added] I can confirm that PMU doesn't work on Intel hybrid cores in Hyper-V, nor does it work in VMware Workstation even for 11th-gen Intel CPUs that aren't hybrid cores. - AMD Zen on hypervisor: the workaround may work on bare mental, but not for hypervisor like hyper-v.
- You can't get access to PMU: Don't worry, have you noticed rr.soft? I've tested it, and it passed 99% of the tests.
Summary: 1. and 2. , If you are on hypervisor with intel hybrid cores or AMD zen, or you are in VMware Workstation with newer intel cpus, you have trouble running rr.
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 reproducing the reported PMU limitations across KVM, Hyper-V, VMware Workstation, Intel hybrid cores, and AMD Zen. Compare the results with the referenced rr.soft project and its reported test coverage; done means clearly documenting which environments rr supports and which remain blocked.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp, linux
- Domain
- devtools, operating-systems
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100