RFR (XS) 8232908: Shenandoah: compact heuristics has incorrect trigger "Free is lower than allocated recently"

[Roman Kennke]

Ok, good. Thanks,
Roman

> Bug:
>   https://bugs.openjdk.java.net/browse/JDK-8232908
> 
> See the discussion in the bug. The fix is to remove the offending trigger:
> 
> diff -r da4578a0f73d src/hotspot/share/gc/shenandoah/heuristics/shenandoahCompactHeuristics.cpp
> --- a/src/hotspot/share/gc/shenandoah/heuristics/shenandoahCompactHeuristics.cpp        Mon Sep 30
> 22:39:11 2019 +0200
> +++ b/src/hotspot/share/gc/shenandoah/heuristics/shenandoahCompactHeuristics.cpp        Wed Oct 23
> 20:14:48 2019 +0200
> @@ -66,11 +66,4 @@
>    }
> 
> -  if (available < threshold_bytes_allocated) {
> -    log_info(gc)("Trigger: Free (" SIZE_FORMAT "%s) is lower than allocated recently (" SIZE_FORMAT
> "%s)",
> -                 byte_size_in_proper_unit(available),
> proper_unit_for_byte_size(available),
> -                 byte_size_in_proper_unit(threshold_bytes_allocated),
> proper_unit_for_byte_size(threshold_bytes_allocated));
> -    return true;
> -  }
> -
>    size_t bytes_allocated = heap->bytes_allocated_since_gc_start();
>    if (bytes_allocated > threshold_bytes_allocated) {
> 
> 
> Testing: hotspot_gc_shenandoah
>