9a4c25731e
Let the object copy cost predictor use the actual copied bytes as input for the prediction instead of the used bytes. Reviewed-by: kbarrett, sjohanss
270 lines
10 KiB
C++
270 lines
10 KiB
C++
/*
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "gc/g1/g1EvacuationInfo.hpp"
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#include "gc/g1/g1HeapRegionTraceType.hpp"
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#include "gc/g1/g1Trace.hpp"
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#include "gc/g1/g1YCTypes.hpp"
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#include "gc/shared/gcHeapSummary.hpp"
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#include "jfr/jfrEvents.hpp"
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#if INCLUDE_JFR
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#include "jfr/metadata/jfrSerializer.hpp"
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#endif
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#if INCLUDE_JFR
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class G1HeapRegionTypeConstant : public JfrSerializer {
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public:
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void serialize(JfrCheckpointWriter& writer) {
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static const u4 nof_entries = G1HeapRegionTraceType::G1HeapRegionTypeEndSentinel;
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writer.write_count(nof_entries);
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for (u4 i = 0; i < nof_entries; ++i) {
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writer.write_key(i);
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writer.write(G1HeapRegionTraceType::to_string((G1HeapRegionTraceType::Type)i));
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}
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}
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};
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class G1YCTypeConstant : public JfrSerializer {
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public:
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void serialize(JfrCheckpointWriter& writer) {
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static const u4 nof_entries = G1YCTypeEndSentinel;
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writer.write_count(nof_entries);
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for (u4 i = 0; i < nof_entries; ++i) {
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writer.write_key(i);
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writer.write(G1YCTypeHelper::to_string((G1YCType)i));
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}
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}
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};
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static void register_jfr_type_constants() {
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JfrSerializer::register_serializer(TYPE_G1HEAPREGIONTYPE, true,
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new G1HeapRegionTypeConstant());
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JfrSerializer::register_serializer(TYPE_G1YCTYPE, true,
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new G1YCTypeConstant());
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}
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#endif
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void G1NewTracer::initialize() {
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JFR_ONLY(register_jfr_type_constants());
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}
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void G1NewTracer::report_yc_type(G1YCType type) {
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_g1_young_gc_info.set_type(type);
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}
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void G1NewTracer::report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions) {
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YoungGCTracer::report_gc_end_impl(timestamp, time_partitions);
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send_g1_young_gc_event();
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}
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void G1NewTracer::report_evacuation_info(G1EvacuationInfo* info) {
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send_evacuation_info_event(info);
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}
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void G1NewTracer::report_evacuation_failed(EvacuationFailedInfo& ef_info) {
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send_evacuation_failed_event(ef_info);
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ef_info.reset();
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}
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void G1NewTracer::report_evacuation_statistics(const G1EvacSummary& young_summary, const G1EvacSummary& old_summary) const {
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send_young_evacuation_statistics(young_summary);
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send_old_evacuation_statistics(old_summary);
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}
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void G1NewTracer::report_basic_ihop_statistics(size_t threshold,
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size_t target_ccupancy,
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size_t current_occupancy,
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size_t last_allocation_size,
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double last_allocation_duration,
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double last_marking_length) {
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send_basic_ihop_statistics(threshold,
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target_ccupancy,
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current_occupancy,
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last_allocation_size,
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last_allocation_duration,
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last_marking_length);
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}
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void G1NewTracer::report_adaptive_ihop_statistics(size_t threshold,
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size_t internal_target_occupancy,
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size_t current_occupancy,
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size_t additional_buffer_size,
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double predicted_allocation_rate,
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double predicted_marking_length,
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bool prediction_active) {
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send_adaptive_ihop_statistics(threshold,
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internal_target_occupancy,
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additional_buffer_size,
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current_occupancy,
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predicted_allocation_rate,
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predicted_marking_length,
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prediction_active);
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}
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void G1NewTracer::send_g1_young_gc_event() {
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EventG1GarbageCollection e(UNTIMED);
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if (e.should_commit()) {
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e.set_gcId(GCId::current());
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e.set_type(_g1_young_gc_info.type());
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e.set_starttime(_shared_gc_info.start_timestamp());
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e.set_endtime(_shared_gc_info.end_timestamp());
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e.commit();
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}
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}
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void G1NewTracer::send_evacuation_info_event(G1EvacuationInfo* info) {
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EventEvacuationInformation e;
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if (e.should_commit()) {
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e.set_gcId(GCId::current());
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e.set_cSetRegions(info->collectionset_regions());
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e.set_cSetUsedBefore(info->collectionset_used_before());
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e.set_cSetUsedAfter(info->collectionset_used_after());
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e.set_allocationRegions(info->allocation_regions());
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e.set_allocationRegionsUsedBefore(info->alloc_regions_used_before());
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e.set_allocationRegionsUsedAfter(info->alloc_regions_used_before() + info->bytes_used());
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e.set_bytesCopied(info->bytes_used());
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e.set_regionsFreed(info->regions_freed());
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e.commit();
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}
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}
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void G1NewTracer::send_evacuation_failed_event(const EvacuationFailedInfo& ef_info) const {
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EventEvacuationFailed e;
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if (e.should_commit()) {
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// Create JFR structured failure data
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JfrStructCopyFailed evac_failed;
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evac_failed.set_objectCount(ef_info.failed_count());
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evac_failed.set_firstSize(ef_info.first_size());
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evac_failed.set_smallestSize(ef_info.smallest_size());
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evac_failed.set_totalSize(ef_info.total_size());
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// Add to the event
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e.set_gcId(GCId::current());
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e.set_evacuationFailed(evac_failed);
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e.commit();
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}
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}
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static JfrStructG1EvacuationStatistics
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create_g1_evacstats(unsigned gcid, const G1EvacSummary& summary) {
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JfrStructG1EvacuationStatistics s;
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s.set_gcId(gcid);
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s.set_allocated(summary.allocated() * HeapWordSize);
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s.set_wasted(summary.wasted() * HeapWordSize);
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s.set_used(summary.used() * HeapWordSize);
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s.set_undoWaste(summary.undo_wasted() * HeapWordSize);
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s.set_regionEndWaste(summary.region_end_waste() * HeapWordSize);
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s.set_regionsRefilled(summary.regions_filled());
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s.set_directAllocated(summary.direct_allocated() * HeapWordSize);
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s.set_failureUsed(summary.failure_used() * HeapWordSize);
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s.set_failureWaste(summary.failure_waste() * HeapWordSize);
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return s;
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}
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void G1NewTracer::send_young_evacuation_statistics(const G1EvacSummary& summary) const {
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EventG1EvacuationYoungStatistics surv_evt;
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if (surv_evt.should_commit()) {
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surv_evt.set_statistics(create_g1_evacstats(GCId::current(), summary));
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surv_evt.commit();
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}
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}
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void G1NewTracer::send_old_evacuation_statistics(const G1EvacSummary& summary) const {
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EventG1EvacuationOldStatistics old_evt;
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if (old_evt.should_commit()) {
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old_evt.set_statistics(create_g1_evacstats(GCId::current(), summary));
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old_evt.commit();
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}
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}
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void G1NewTracer::send_basic_ihop_statistics(size_t threshold,
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size_t target_occupancy,
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size_t current_occupancy,
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size_t last_allocation_size,
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double last_allocation_duration,
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double last_marking_length) {
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EventG1BasicIHOP evt;
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if (evt.should_commit()) {
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evt.set_gcId(GCId::current());
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evt.set_threshold(threshold);
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evt.set_targetOccupancy(target_occupancy);
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evt.set_thresholdPercentage(target_occupancy > 0 ? ((double)threshold / target_occupancy) : 0.0);
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evt.set_currentOccupancy(current_occupancy);
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evt.set_recentMutatorAllocationSize(last_allocation_size);
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evt.set_recentMutatorDuration(last_allocation_duration * MILLIUNITS);
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evt.set_recentAllocationRate(last_allocation_duration != 0.0 ? last_allocation_size / last_allocation_duration : 0.0);
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evt.set_lastMarkingDuration(last_marking_length * MILLIUNITS);
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evt.commit();
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}
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}
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void G1NewTracer::send_adaptive_ihop_statistics(size_t threshold,
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size_t internal_target_occupancy,
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size_t current_occupancy,
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size_t additional_buffer_size,
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double predicted_allocation_rate,
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double predicted_marking_length,
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bool prediction_active) {
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EventG1AdaptiveIHOP evt;
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if (evt.should_commit()) {
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evt.set_gcId(GCId::current());
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evt.set_threshold(threshold);
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evt.set_thresholdPercentage(internal_target_occupancy > 0 ? ((double)threshold / internal_target_occupancy) : 0.0);
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evt.set_ihopTargetOccupancy(internal_target_occupancy);
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evt.set_currentOccupancy(current_occupancy);
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evt.set_additionalBufferSize(additional_buffer_size);
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evt.set_predictedAllocationRate(predicted_allocation_rate);
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evt.set_predictedMarkingDuration(predicted_marking_length * MILLIUNITS);
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evt.set_predictionActive(prediction_active);
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evt.commit();
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}
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}
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void G1OldTracer::report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp) {
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_shared_gc_info.set_start_timestamp(timestamp);
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}
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void G1OldTracer::set_gc_cause(GCCause::Cause cause) {
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_shared_gc_info.set_cause(cause);
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}
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void G1MMUTracer::report_mmu(double time_slice_sec, double gc_time_sec, double max_time_sec) {
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send_g1_mmu_event(time_slice_sec * MILLIUNITS,
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gc_time_sec * MILLIUNITS,
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max_time_sec * MILLIUNITS);
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}
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void G1MMUTracer::send_g1_mmu_event(double time_slice_ms, double gc_time_ms, double max_time_ms) {
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EventG1MMU e;
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if (e.should_commit()) {
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e.set_gcId(GCId::current());
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e.set_timeSlice(time_slice_ms);
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e.set_gcTime(gc_time_ms);
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e.set_pauseTarget(max_time_ms);
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e.commit();
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}
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}
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