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8225340: ZGC: Add logging of High Usage rule

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Reviewed-by: stefank, eosterlund
This commit is contained in:
Per Lidén 2019-06-07 11:19:34 +02:00
parent 4a13459dd5
commit bfc30c8dbc
1 changed files with 5 additions and 1 deletions
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6
src/hotspot/share/gc/z/zDirector.cpp
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@ -196,8 +196,12 @@ bool ZDirector::rule_high_usage() const {
const size_t used = ZHeap::heap()->used();
const size_t free_with_reserve = max_capacity - used;
const size_t free = free_with_reserve - MIN2(free_with_reserve, max_reserve);
const double free_percent = percent_of(free, max_capacity);
return percent_of(free, max_capacity) <= 5.0;
log_debug(gc, director)("Rule: High Usage, Free: " SIZE_FORMAT "MB(%.1lf%%)",
free / M, free_percent);
return free_percent <= 5.0;
}
GCCause::Cause ZDirector::make_gc_decision() const {