RFR: 8284404: Too aggressive sweeping with Loom [v2]

[Tobias Hartmann]

On Fri, 17 Jun 2022 13:51:59 GMT, Erik Österlund <eosterlund at openjdk.org> wrote:

>> The normal sweeping heuristics trigger sweeping whenever 0.5% of the reserved code cache could have died. Normally that is fine, but with loom such sweeping requires a full GC cycle, as stacks can now be in the Java heap as well. In that context, 0.5% does seem to be a bit too trigger happy. So this patch adjusts that default when using loom to 10x higher.
>> If you run something like jython which spins up a lot of code, it unsurprisingly triggers a lot less GCs due to code cache pressure.
>
> Erik Österlund has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add comment

Marked as reviewed by thartmann (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/8673