| /* |
| * Copyright (c) 2013, 2016 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 |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "gc_implementation/g1/concurrentG1Refine.hpp" |
| #include "gc_implementation/g1/concurrentG1RefineThread.hpp" |
| #include "gc_implementation/g1/heapRegion.hpp" |
| #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
| #include "gc_implementation/g1/g1RemSet.inline.hpp" |
| #include "gc_implementation/g1/g1RemSetSummary.hpp" |
| #include "gc_implementation/g1/heapRegionRemSet.hpp" |
| #include "runtime/thread.inline.hpp" |
| |
| class GetRSThreadVTimeClosure : public ThreadClosure { |
| private: |
| G1RemSetSummary* _summary; |
| uint _counter; |
| |
| public: |
| GetRSThreadVTimeClosure(G1RemSetSummary * summary) : ThreadClosure(), _summary(summary), _counter(0) { |
| assert(_summary != NULL, "just checking"); |
| } |
| |
| virtual void do_thread(Thread* t) { |
| ConcurrentG1RefineThread* crt = (ConcurrentG1RefineThread*) t; |
| _summary->set_rs_thread_vtime(_counter, crt->vtime_accum()); |
| _counter++; |
| } |
| }; |
| |
| void G1RemSetSummary::update() { |
| _num_refined_cards = remset()->conc_refine_cards(); |
| DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set(); |
| _num_processed_buf_mutator = dcqs.processed_buffers_mut(); |
| _num_processed_buf_rs_threads = dcqs.processed_buffers_rs_thread(); |
| |
| _num_coarsenings = HeapRegionRemSet::n_coarsenings(); |
| |
| ConcurrentG1Refine * cg1r = G1CollectedHeap::heap()->concurrent_g1_refine(); |
| if (_rs_threads_vtimes != NULL) { |
| GetRSThreadVTimeClosure p(this); |
| cg1r->worker_threads_do(&p); |
| } |
| set_sampling_thread_vtime(cg1r->sampling_thread()->vtime_accum()); |
| } |
| |
| void G1RemSetSummary::set_rs_thread_vtime(uint thread, double value) { |
| assert(_rs_threads_vtimes != NULL, "just checking"); |
| assert(thread < _num_vtimes, "just checking"); |
| _rs_threads_vtimes[thread] = value; |
| } |
| |
| double G1RemSetSummary::rs_thread_vtime(uint thread) const { |
| assert(_rs_threads_vtimes != NULL, "just checking"); |
| assert(thread < _num_vtimes, "just checking"); |
| return _rs_threads_vtimes[thread]; |
| } |
| |
| void G1RemSetSummary::initialize(G1RemSet* remset) { |
| assert(_rs_threads_vtimes == NULL, "just checking"); |
| assert(remset != NULL, "just checking"); |
| |
| _remset = remset; |
| _num_vtimes = ConcurrentG1Refine::thread_num(); |
| _rs_threads_vtimes = NEW_C_HEAP_ARRAY(double, _num_vtimes, mtGC); |
| memset(_rs_threads_vtimes, 0, sizeof(double) * _num_vtimes); |
| |
| update(); |
| } |
| |
| void G1RemSetSummary::set(G1RemSetSummary* other) { |
| assert(other != NULL, "just checking"); |
| assert(remset() == other->remset(), "just checking"); |
| assert(_num_vtimes == other->_num_vtimes, "just checking"); |
| |
| _num_refined_cards = other->num_concurrent_refined_cards(); |
| |
| _num_processed_buf_mutator = other->num_processed_buf_mutator(); |
| _num_processed_buf_rs_threads = other->num_processed_buf_rs_threads(); |
| |
| _num_coarsenings = other->_num_coarsenings; |
| |
| memcpy(_rs_threads_vtimes, other->_rs_threads_vtimes, sizeof(double) * _num_vtimes); |
| |
| set_sampling_thread_vtime(other->sampling_thread_vtime()); |
| } |
| |
| void G1RemSetSummary::subtract_from(G1RemSetSummary* other) { |
| assert(other != NULL, "just checking"); |
| assert(remset() == other->remset(), "just checking"); |
| assert(_num_vtimes == other->_num_vtimes, "just checking"); |
| |
| _num_refined_cards = other->num_concurrent_refined_cards() - _num_refined_cards; |
| |
| _num_processed_buf_mutator = other->num_processed_buf_mutator() - _num_processed_buf_mutator; |
| _num_processed_buf_rs_threads = other->num_processed_buf_rs_threads() - _num_processed_buf_rs_threads; |
| |
| _num_coarsenings = other->num_coarsenings() - _num_coarsenings; |
| |
| for (uint i = 0; i < _num_vtimes; i++) { |
| set_rs_thread_vtime(i, other->rs_thread_vtime(i) - rs_thread_vtime(i)); |
| } |
| |
| _sampling_thread_vtime = other->sampling_thread_vtime() - _sampling_thread_vtime; |
| } |
| |
| static double percent_of(size_t numerator, size_t denominator) { |
| if (denominator != 0) { |
| return (double)numerator / denominator * 100.0f; |
| } else { |
| return 0.0f; |
| } |
| } |
| |
| class RegionTypeCounter VALUE_OBJ_CLASS_SPEC { |
| private: |
| const char* _name; |
| |
| size_t _rs_mem_size; |
| size_t _cards_occupied; |
| size_t _amount; |
| |
| size_t _code_root_mem_size; |
| size_t _code_root_elems; |
| |
| double rs_mem_size_percent_of(size_t total) { |
| return percent_of(_rs_mem_size, total); |
| } |
| |
| double cards_occupied_percent_of(size_t total) { |
| return percent_of(_cards_occupied, total); |
| } |
| |
| double code_root_mem_size_percent_of(size_t total) { |
| return percent_of(_code_root_mem_size, total); |
| } |
| |
| double code_root_elems_percent_of(size_t total) { |
| return percent_of(_code_root_elems, total); |
| } |
| |
| size_t amount() const { return _amount; } |
| |
| public: |
| |
| RegionTypeCounter(const char* name) : _name(name), _rs_mem_size(0), _cards_occupied(0), |
| _amount(0), _code_root_mem_size(0), _code_root_elems(0) { } |
| |
| void add(size_t rs_mem_size, size_t cards_occupied, size_t code_root_mem_size, |
| size_t code_root_elems) { |
| _rs_mem_size += rs_mem_size; |
| _cards_occupied += cards_occupied; |
| _code_root_mem_size += code_root_mem_size; |
| _code_root_elems += code_root_elems; |
| _amount++; |
| } |
| |
| size_t rs_mem_size() const { return _rs_mem_size; } |
| size_t cards_occupied() const { return _cards_occupied; } |
| |
| size_t code_root_mem_size() const { return _code_root_mem_size; } |
| size_t code_root_elems() const { return _code_root_elems; } |
| |
| void print_rs_mem_info_on(outputStream * out, size_t total) { |
| out->print_cr(" "SIZE_FORMAT_W(8) "%s (%5.1f%%) by "SIZE_FORMAT" %s regions", |
| byte_size_in_proper_unit(rs_mem_size()), |
| proper_unit_for_byte_size(rs_mem_size()), |
| rs_mem_size_percent_of(total), amount(), _name); |
| } |
| |
| void print_cards_occupied_info_on(outputStream * out, size_t total) { |
| out->print_cr(" "SIZE_FORMAT_W(8)" (%5.1f%%) entries by "SIZE_FORMAT" %s regions", |
| cards_occupied(), cards_occupied_percent_of(total), amount(), _name); |
| } |
| |
| void print_code_root_mem_info_on(outputStream * out, size_t total) { |
| out->print_cr(" "SIZE_FORMAT_W(8) "%s (%5.1f%%) by "SIZE_FORMAT" %s regions", |
| byte_size_in_proper_unit(code_root_mem_size()), |
| proper_unit_for_byte_size(code_root_mem_size()), |
| code_root_mem_size_percent_of(total), amount(), _name); |
| } |
| |
| void print_code_root_elems_info_on(outputStream * out, size_t total) { |
| out->print_cr(" "SIZE_FORMAT_W(8)" (%5.1f%%) elements by "SIZE_FORMAT" %s regions", |
| code_root_elems(), code_root_elems_percent_of(total), amount(), _name); |
| } |
| }; |
| |
| |
| class HRRSStatsIter: public HeapRegionClosure { |
| private: |
| RegionTypeCounter _young; |
| RegionTypeCounter _humonguous; |
| RegionTypeCounter _free; |
| RegionTypeCounter _old; |
| RegionTypeCounter _all; |
| |
| size_t _max_rs_mem_sz; |
| HeapRegion* _max_rs_mem_sz_region; |
| |
| size_t total_rs_mem_sz() const { return _all.rs_mem_size(); } |
| size_t total_cards_occupied() const { return _all.cards_occupied(); } |
| |
| size_t max_rs_mem_sz() const { return _max_rs_mem_sz; } |
| HeapRegion* max_rs_mem_sz_region() const { return _max_rs_mem_sz_region; } |
| |
| size_t _max_code_root_mem_sz; |
| HeapRegion* _max_code_root_mem_sz_region; |
| |
| size_t total_code_root_mem_sz() const { return _all.code_root_mem_size(); } |
| size_t total_code_root_elems() const { return _all.code_root_elems(); } |
| |
| size_t max_code_root_mem_sz() const { return _max_code_root_mem_sz; } |
| HeapRegion* max_code_root_mem_sz_region() const { return _max_code_root_mem_sz_region; } |
| |
| public: |
| HRRSStatsIter() : _all("All"), _young("Young"), _humonguous("Humonguous"), |
| _free("Free"), _old("Old"), _max_code_root_mem_sz_region(NULL), _max_rs_mem_sz_region(NULL), |
| _max_rs_mem_sz(0), _max_code_root_mem_sz(0) |
| {} |
| |
| bool doHeapRegion(HeapRegion* r) { |
| HeapRegionRemSet* hrrs = r->rem_set(); |
| |
| // HeapRegionRemSet::mem_size() includes the |
| // size of the strong code roots |
| size_t rs_mem_sz = hrrs->mem_size(); |
| if (rs_mem_sz > _max_rs_mem_sz) { |
| _max_rs_mem_sz = rs_mem_sz; |
| _max_rs_mem_sz_region = r; |
| } |
| size_t occupied_cards = hrrs->occupied(); |
| size_t code_root_mem_sz = hrrs->strong_code_roots_mem_size(); |
| if (code_root_mem_sz > max_code_root_mem_sz()) { |
| _max_code_root_mem_sz = code_root_mem_sz; |
| _max_code_root_mem_sz_region = r; |
| } |
| size_t code_root_elems = hrrs->strong_code_roots_list_length(); |
| |
| RegionTypeCounter* current = NULL; |
| if (r->is_free()) { |
| current = &_free; |
| } else if (r->is_young()) { |
| current = &_young; |
| } else if (r->isHumongous()) { |
| current = &_humonguous; |
| } else if (r->is_old()) { |
| current = &_old; |
| } else { |
| ShouldNotReachHere(); |
| } |
| current->add(rs_mem_sz, occupied_cards, code_root_mem_sz, code_root_elems); |
| _all.add(rs_mem_sz, occupied_cards, code_root_mem_sz, code_root_elems); |
| |
| return false; |
| } |
| |
| void print_summary_on(outputStream* out) { |
| RegionTypeCounter* counters[] = { &_young, &_humonguous, &_free, &_old, NULL }; |
| |
| out->print_cr("\n Current rem set statistics"); |
| out->print_cr(" Total per region rem sets sizes = " SIZE_FORMAT "%s." |
| " Max = " SIZE_FORMAT "%s.", |
| byte_size_in_proper_unit(total_rs_mem_sz()), |
| proper_unit_for_byte_size(total_rs_mem_sz()), |
| byte_size_in_proper_unit(max_rs_mem_sz()), |
| proper_unit_for_byte_size(max_rs_mem_sz())); |
| |
| for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) { |
| (*current)->print_rs_mem_info_on(out, total_rs_mem_sz()); |
| } |
| |
| out->print_cr(" Static structures = " SIZE_FORMAT "%s," |
| " free_lists = " SIZE_FORMAT "%s.", |
| byte_size_in_proper_unit(HeapRegionRemSet::static_mem_size()), |
| proper_unit_for_byte_size(HeapRegionRemSet::static_mem_size()), |
| byte_size_in_proper_unit(HeapRegionRemSet::fl_mem_size()), |
| proper_unit_for_byte_size(HeapRegionRemSet::fl_mem_size())); |
| |
| out->print_cr(" "SIZE_FORMAT" occupied cards represented.", |
| total_cards_occupied()); |
| for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) { |
| (*current)->print_cards_occupied_info_on(out, total_cards_occupied()); |
| } |
| |
| // Largest sized rem set region statistics |
| HeapRegionRemSet* rem_set = max_rs_mem_sz_region()->rem_set(); |
| out->print_cr(" Region with largest rem set = "HR_FORMAT", " |
| "size = "SIZE_FORMAT "%s, occupied = "SIZE_FORMAT "%s.", |
| HR_FORMAT_PARAMS(max_rs_mem_sz_region()), |
| byte_size_in_proper_unit(rem_set->mem_size()), |
| proper_unit_for_byte_size(rem_set->mem_size()), |
| byte_size_in_proper_unit(rem_set->occupied()), |
| proper_unit_for_byte_size(rem_set->occupied())); |
| // Strong code root statistics |
| HeapRegionRemSet* max_code_root_rem_set = max_code_root_mem_sz_region()->rem_set(); |
| out->print_cr(" Total heap region code root sets sizes = " SIZE_FORMAT "%s." |
| " Max = " SIZE_FORMAT "%s.", |
| byte_size_in_proper_unit(total_code_root_mem_sz()), |
| proper_unit_for_byte_size(total_code_root_mem_sz()), |
| byte_size_in_proper_unit(max_code_root_rem_set->strong_code_roots_mem_size()), |
| proper_unit_for_byte_size(max_code_root_rem_set->strong_code_roots_mem_size())); |
| |
| for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) { |
| (*current)->print_code_root_mem_info_on(out, total_code_root_mem_sz()); |
| } |
| |
| out->print_cr(" "SIZE_FORMAT" code roots represented.", |
| total_code_root_elems()); |
| for (RegionTypeCounter** current = &counters[0]; *current != NULL; current++) { |
| (*current)->print_code_root_elems_info_on(out, total_code_root_elems()); |
| } |
| |
| out->print_cr(" Region with largest amount of code roots = "HR_FORMAT", " |
| "size = "SIZE_FORMAT "%s, num_elems = "SIZE_FORMAT".", |
| HR_FORMAT_PARAMS(max_code_root_mem_sz_region()), |
| byte_size_in_proper_unit(max_code_root_rem_set->strong_code_roots_mem_size()), |
| proper_unit_for_byte_size(max_code_root_rem_set->strong_code_roots_mem_size()), |
| max_code_root_rem_set->strong_code_roots_list_length()); |
| |
| } |
| }; |
| |
| void G1RemSetSummary::print_on(outputStream* out) { |
| out->print_cr("\n Recent concurrent refinement statistics"); |
| out->print_cr(" Processed "SIZE_FORMAT" cards", |
| num_concurrent_refined_cards()); |
| out->print_cr(" Of "SIZE_FORMAT" completed buffers:", num_processed_buf_total()); |
| out->print_cr(" "SIZE_FORMAT_W(8)" (%5.1f%%) by concurrent RS threads.", |
| num_processed_buf_total(), |
| percent_of(num_processed_buf_rs_threads(), num_processed_buf_total())); |
| out->print_cr(" "SIZE_FORMAT_W(8)" (%5.1f%%) by mutator threads.", |
| num_processed_buf_mutator(), |
| percent_of(num_processed_buf_mutator(), num_processed_buf_total())); |
| out->print_cr(" Did "SIZE_FORMAT" coarsenings.", num_coarsenings()); |
| out->print_cr(" Concurrent RS threads times (s)"); |
| out->print(" "); |
| for (uint i = 0; i < _num_vtimes; i++) { |
| out->print(" %5.2f", rs_thread_vtime(i)); |
| } |
| out->cr(); |
| out->print_cr(" Concurrent sampling threads times (s)"); |
| out->print_cr(" %5.2f", sampling_thread_vtime()); |
| |
| HRRSStatsIter blk; |
| G1CollectedHeap::heap()->heap_region_iterate(&blk); |
| blk.print_summary_on(out); |
| } |