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8328744: Parallel: Parallel GC throws OOM before heap is fully expanded

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Reviewed-by: ayang, tschatzl
This commit is contained in:
Zhengyu Gu 2024-03-25 13:04:07 +00:00
parent cb2a671359
commit 142c311e3b
1 changed files with 5 additions and 3 deletions
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8
src/hotspot/share/gc/parallel/psScavenge.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2002, 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2002, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -702,12 +702,14 @@ bool PSScavenge::should_attempt_scavenge() {
size_t avg_promoted = (size_t) policy->padded_average_promoted_in_bytes();
size_t promotion_estimate = MIN2(avg_promoted, young_gen->used_in_bytes());
bool result = promotion_estimate < old_gen->free_in_bytes();
// Total free size after possible old gen expansion
size_t free_in_old_gen = old_gen->max_gen_size() - old_gen->used_in_bytes();
bool result = promotion_estimate < free_in_old_gen;
log_trace(ergo)("%s scavenge: average_promoted " SIZE_FORMAT " padded_average_promoted " SIZE_FORMAT " free in old gen " SIZE_FORMAT,
result ? "Do" : "Skip", (size_t) policy->average_promoted_in_bytes(),
(size_t) policy->padded_average_promoted_in_bytes(),
old_gen->free_in_bytes());
free_in_old_gen);
if (young_gen->used_in_bytes() < (size_t) policy->padded_average_promoted_in_bytes()) {
log_trace(ergo)(" padded_promoted_average is greater than maximum promotion = " SIZE_FORMAT, young_gen->used_in_bytes());
}