diff options
Diffstat (limited to 'runtime/gc/heap.cc')
| -rw-r--r-- | runtime/gc/heap.cc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/runtime/gc/heap.cc b/runtime/gc/heap.cc index eb8c7b1..72b8449 100644 --- a/runtime/gc/heap.cc +++ b/runtime/gc/heap.cc @@ -77,6 +77,10 @@ static constexpr size_t kGcAlotInterval = KB; // Minimum amount of remaining bytes before a concurrent GC is triggered. static constexpr size_t kMinConcurrentRemainingBytes = 128 * KB; static constexpr size_t kMaxConcurrentRemainingBytes = 512 * KB; +// Sticky GC throughput adjustment, divided by 4. Increasing this causes sticky GC to occur more +// relative to partial/full GC. This is desirable since sticky GCs interfere less with mutator +// threads (lower pauses, use less memory bandwidth). +static constexpr double kStickyGcThroughputAdjustment = 1.25; Heap::Heap(size_t initial_size, size_t growth_limit, size_t min_free, size_t max_free, double target_utilization, size_t capacity, const std::string& image_file_name, @@ -2546,7 +2550,7 @@ void Heap::GrowForUtilization(collector::GarbageCollector* collector_ran) { // We also check that the bytes allocated aren't over the footprint limit in order to prevent a // pathological case where dead objects which aren't reclaimed by sticky could get accumulated // if the sticky GC throughput always remained >= the full/partial throughput. - if (collector_ran->GetEstimatedLastIterationThroughput() >= + if (collector_ran->GetEstimatedLastIterationThroughput() * kStickyGcThroughputAdjustment >= non_sticky_collector->GetEstimatedMeanThroughput() && non_sticky_collector->GetIterations() > 0 && bytes_allocated <= max_allowed_footprint_) { |