RFR: Load balance remembered set scanning [v2]

[William Kemper]

On Mon, 1 Aug 2022 18:15:59 GMT, Kelvin Nilsen <kdnilsen at openjdk.org> wrote:

>> src/hotspot/share/gc/shenandoah/shenandoahScanRemembered.cpp line 155:
>> 
>>> 153:   // Last group does the remnant of heap, one _smallest_chunk_size at a time.
>>> 154:   // Round down.
>>> 155:   return _heap->num_regions() / 2;
>> 
>> I don't understand this comment. Is this a `TODO` comment? Or should this be `initial_group_size`?
>
> I've rewritten the comment here in an attempt to make the intention more clear.

I get it. I think it would be more clear if this method were called `initial_group_size` as the reduction of subsequent group sizes does not happen in this method.

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PR: https://git.openjdk.org/shenandoah/pull/153