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8295333: G1: Remove unnecessary check in G1Policy::calculate_desired_eden_length_by_mmu

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Reviewed-by: tschatzl, kbarrett
This commit is contained in:
Albert Mingkun Yang 2022-10-17 09:44:43 +00:00
parent 7743345f6f
commit 172006c0e9
1 changed files with 5 additions and 11 deletions

16
src/hotspot/share/gc/g1/g1Policy.cpp

@ -179,17 +179,11 @@ void G1Policy::record_new_heap_size(uint new_number_of_regions) {
}
uint G1Policy::calculate_desired_eden_length_by_mmu() const {
// One could argue that any useful eden length to keep any MMU wouldn't be zero, but
// in theory this is possible. Other constraints enforce a minimum eden size of one
// region anyway.
uint desired_min_length = 0;
if (use_adaptive_young_list_length()) {
double now_sec = os::elapsedTime();
double when_ms = _mmu_tracker->when_max_gc_sec(now_sec) * 1000.0;
double alloc_rate_ms = _analytics->predict_alloc_rate_ms();
desired_min_length = (uint) ceil(alloc_rate_ms * when_ms);
}
return desired_min_length;
assert(use_adaptive_young_list_length(), "precondition");
double now_sec = os::elapsedTime();
double when_ms = _mmu_tracker->when_max_gc_sec(now_sec) * 1000.0;
double alloc_rate_ms = _analytics->predict_alloc_rate_ms();
return (uint) ceil(alloc_rate_ms * when_ms);
}
void G1Policy::update_young_length_bounds() {