Suggestion: Turn on +RTS -xt by default
I found it quite surprising and difficult to debug that my heap profile showed no leak while the GC stats showed a clear leak. As a user who is somewhat familiar with this stuff, I was quite surprised that those two data sources didn't agree. I wasn't sure how to determine why they disagreed, since none of the output referenced anything interesting.
I'm not familiar with the reasoning behind disabling -xt by default, but I think it may be easier for users to figure out that they need to *disable* it (since they'll be able to see its results in the heap profile) than to figure out that they need to *enable* it.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 8.2.2 |
| Type | FeatureRequest |
| TypeOfFailure | OtherFailure |
| Priority | low |
| Resolution | Unresolved |
| Component | Runtime System |
| Test case | |
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