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8053998: Hot card cache flush chunk size too coarse grained

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Changed the chunk size to a smaller fixed number.

Reviewed-by: tschatzl, mgerdin
This commit is contained in:
Marcus Larsson 2014-09-18 11:27:59 +02:00
parent f6ab247c45
commit d90a333e5b
2 changed files with 4 additions and 3 deletions
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4
hotspot/src/share/vm/gc_implementation/g1/g1HotCardCache.cpp
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@ -43,9 +43,7 @@ void G1HotCardCache::initialize(G1RegionToSpaceMapper* card_counts_storage) {
_hot_cache_idx = 0;
// For refining the cards in the hot cache in parallel
uint n_workers = (ParallelGCThreads > 0 ?
_g1h->workers()->total_workers() : 1);
_hot_cache_par_chunk_size = MAX2(1, _hot_cache_size / (int)n_workers);
_hot_cache_par_chunk_size = (ParallelGCThreads > 0 ? ClaimChunkSize : _hot_cache_size);
_hot_cache_par_claimed_idx = 0;
_card_counts.initialize(card_counts_storage);

3
hotspot/src/share/vm/gc_implementation/g1/g1HotCardCache.hpp
View file

@ -70,6 +70,9 @@ class G1HotCardCache: public CHeapObj<mtGC> {
G1CardCounts _card_counts;
// The number of cached cards a thread claims when flushing the cache
static const int ClaimChunkSize = 32;
bool default_use_cache() const {
return (G1ConcRSLogCacheSize > 0);
}