23 lines
1.3 KiB
Diff
23 lines
1.3 KiB
Diff
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Subject: Backport of 8333088: ubsan: shenandoahAdaptiveHeuristics.cpp: runtime error: division by zero
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---
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.../gc/shenandoah/heuristics/shenandoahAdaptiveHeuristics.cpp | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/hotspot/share/gc/shenandoah/heuristics/shenandoahAdaptiveHeuristics.cpp b/src/hotspot/share/gc/shenandoah/heuristics/shenandoahAdaptiveHeuristics.cpp
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index 819f1e8d7..371e4c90c 100644
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--- a/src/hotspot/share/gc/shenandoah/heuristics/shenandoahAdaptiveHeuristics.cpp
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+++ b/src/hotspot/share/gc/shenandoah/heuristics/shenandoahAdaptiveHeuristics.cpp
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@@ -243,7 +243,7 @@ bool ShenandoahAdaptiveHeuristics::should_start_gc() {
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double avg_cycle_time = _gc_time_history->davg() + (_margin_of_error_sd * _gc_time_history->dsd());
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double avg_alloc_rate = _allocation_rate.upper_bound(_margin_of_error_sd);
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- if (avg_cycle_time > allocation_headroom / avg_alloc_rate) {
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+ if (avg_cycle_time * avg_alloc_rate > allocation_headroom) {
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log_info(gc)("Trigger: Average GC time (%.2f ms) is above the time for average allocation rate (%.0f %sB/s) to deplete free headroom (" SIZE_FORMAT "%s) (margin of error = %.2f)",
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avg_cycle_time * 1000,
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byte_size_in_proper_unit(avg_alloc_rate), proper_unit_for_byte_size(avg_alloc_rate),
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--
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2.33.0
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