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8332717: ZGC: Division by zero in heuristics

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Reviewed-by: aboldtch, shade
This commit is contained in:
Erik Österlund 2024-06-20 05:23:08 +00:00
parent fad6644eab
commit 2d4185f4f1
1 changed files with 4 additions and 0 deletions
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4
src/hotspot/share/gc/z/zDirector.cpp
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@ -524,6 +524,10 @@ static bool rule_major_allocation_rate(const ZDirectorStats& stats) {
} }
static double calculate_young_to_old_worker_ratio(const ZDirectorStats& stats) { static double calculate_young_to_old_worker_ratio(const ZDirectorStats& stats) {
if (!stats._old_stats._cycle._is_time_trustable) {
return 1.0;
}
const double young_gc_time = gc_time(stats._young_stats); const double young_gc_time = gc_time(stats._young_stats);
const double old_gc_time = gc_time(stats._old_stats); const double old_gc_time = gc_time(stats._old_stats);
const size_t reclaimed_per_young_gc = stats._young_stats._stat_heap._reclaimed_avg; const size_t reclaimed_per_young_gc = stats._young_stats._stat_heap._reclaimed_avg;