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src/share/vm/gc_implementation/shared/gcAdaptivePolicyCounters.cpp@b2ef234911c9 (annotated)

src/share/vm/gc_implementation/shared/gcAdaptivePolicyCounters.cpp

Thu, 20 Sep 2012 09:52:56 -0700

author

johnc

date

Thu, 20 Sep 2012 09:52:56 -0700

changeset 4067

b2ef234911c9

parent 2314

f95d63e2154a

child 6876

710a3c8b516e

permissions

-rw-r--r--

7190666: G1: assert(_unused == 0) failed: Inconsistency in PLAB stats
Summary: Reset the fields in ParGCAllocBuffer, that are used for accumulating values for the ResizePLAB sensors in PLABStats, to zero after flushing the values to the PLABStats fields. Flush PLABStats values only when retiring the final allocation buffers prior to disposing of a G1ParScanThreadState object, rather than when retiring every allocation buffer.
Reviewed-by: jwilhelm, jmasa, ysr

duke@435	1	/*
stefank@2314	2	* Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#include "precompiled.hpp"
stefank@2314	26	#include "gc_implementation/shared/gcAdaptivePolicyCounters.hpp"
stefank@2314	27	#include "memory/resourceArea.hpp"
duke@435	28
duke@435	29	// This class keeps statistical information and computes the
duke@435	30	// size of the heap.
duke@435	31
duke@435	32	GCAdaptivePolicyCounters::GCAdaptivePolicyCounters(const char* name,
duke@435	33	int collectors,
duke@435	34	int generations,
duke@435	35	AdaptiveSizePolicy* size_policy_arg)
duke@435	36	: GCPolicyCounters(name, collectors, generations),
duke@435	37	_size_policy(size_policy_arg) {
duke@435	38	if (UsePerfData) {
duke@435	39	EXCEPTION_MARK;
duke@435	40	ResourceMark rm;
duke@435	41
duke@435	42	const char* cname = PerfDataManager::counter_name(name_space(), "edenSize");
duke@435	43	_eden_size_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	44	PerfData::U_Bytes, _size_policy->calculated_eden_size_in_bytes(), CHECK);
duke@435	45
duke@435	46	cname = PerfDataManager::counter_name(name_space(), "promoSize");
duke@435	47	_promo_size_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	48	PerfData::U_Bytes, size_policy()->calculated_promo_size_in_bytes(),
duke@435	49	CHECK);
duke@435	50
duke@435	51	cname = PerfDataManager::counter_name(name_space(), "youngCapacity");
duke@435	52	size_t young_capacity_in_bytes =
duke@435	53	_size_policy->calculated_eden_size_in_bytes() +
duke@435	54	_size_policy->calculated_survivor_size_in_bytes();
duke@435	55	_young_capacity_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	56	PerfData::U_Bytes, young_capacity_in_bytes, CHECK);
duke@435	57
duke@435	58	cname = PerfDataManager::counter_name(name_space(), "avgSurvivedAvg");
duke@435	59	_avg_survived_avg_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	60	PerfData::U_Bytes, size_policy()->calculated_survivor_size_in_bytes(),
duke@435	61	CHECK);
duke@435	62
duke@435	63	cname = PerfDataManager::counter_name(name_space(), "avgSurvivedDev");
duke@435	64	_avg_survived_dev_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	65	PerfData::U_Bytes, (jlong) 0 , CHECK);
duke@435	66
duke@435	67	cname = PerfDataManager::counter_name(name_space(), "avgSurvivedPaddedAvg");
duke@435	68	_avg_survived_padded_avg_counter =
duke@435	69	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
duke@435	70	size_policy()->calculated_survivor_size_in_bytes(), CHECK);
duke@435	71
duke@435	72	cname = PerfDataManager::counter_name(name_space(), "avgMinorPauseTime");
duke@435	73	_avg_minor_pause_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	74	PerfData::U_Ticks, (jlong) _size_policy->_avg_minor_pause->average(),
duke@435	75	CHECK);
duke@435	76
duke@435	77	cname = PerfDataManager::counter_name(name_space(), "avgMinorIntervalTime");
duke@435	78	_avg_minor_interval_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	79	cname,
duke@435	80	PerfData::U_Ticks,
duke@435	81	(jlong) _size_policy->_avg_minor_interval->average(),
duke@435	82	CHECK);
duke@435	83
duke@435	84	#ifdef NOT_PRODUCT
duke@435	85	// This is a counter for the most recent minor pause time
duke@435	86	// (the last sample, not the average). It is useful for
duke@435	87	// verifying the average pause time but not worth putting
duke@435	88	// into the product.
duke@435	89	cname = PerfDataManager::counter_name(name_space(), "minorPauseTime");
duke@435	90	_minor_pause_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	91	PerfData::U_Ticks, (jlong) _size_policy->_avg_minor_pause->last_sample(),
duke@435	92	CHECK);
duke@435	93	#endif
duke@435	94
duke@435	95	cname = PerfDataManager::counter_name(name_space(), "minorGcCost");
duke@435	96	_minor_gc_cost_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	97	cname,
duke@435	98	PerfData::U_Ticks,
duke@435	99	(jlong) _size_policy->minor_gc_cost(),
duke@435	100	CHECK);
duke@435	101
duke@435	102	cname = PerfDataManager::counter_name(name_space(), "mutatorCost");
duke@435	103	_mutator_cost_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	104	PerfData::U_Ticks, (jlong) _size_policy->mutator_cost(), CHECK);
duke@435	105
duke@435	106	cname = PerfDataManager::counter_name(name_space(), "survived");
duke@435	107	_survived_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	108	PerfData::U_Bytes, (jlong) 0, CHECK);
duke@435	109
duke@435	110	cname = PerfDataManager::counter_name(name_space(), "promoted");
duke@435	111	_promoted_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	112	PerfData::U_Bytes, (jlong) 0, CHECK);
duke@435	113
duke@435	114	cname = PerfDataManager::counter_name(name_space(), "avgYoungLive");
duke@435	115	_avg_young_live_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	116	PerfData::U_Bytes, (jlong) size_policy()->avg_young_live()->average(),
duke@435	117	CHECK);
duke@435	118
duke@435	119	cname = PerfDataManager::counter_name(name_space(), "avgOldLive");
duke@435	120	_avg_old_live_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	121	PerfData::U_Bytes, (jlong) size_policy()->avg_old_live()->average(),
duke@435	122	CHECK);
duke@435	123
duke@435	124	cname = PerfDataManager::counter_name(name_space(), "survivorOverflowed");
duke@435	125	_survivor_overflowed_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	126	PerfData::U_Events, (jlong)0, CHECK);
duke@435	127
duke@435	128	cname = PerfDataManager::counter_name(name_space(),
duke@435	129	"decrementTenuringThresholdForGcCost");
duke@435	130	_decrement_tenuring_threshold_for_gc_cost_counter =
duke@435	131	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Events,
duke@435	132	(jlong)0, CHECK);
duke@435	133
duke@435	134	cname = PerfDataManager::counter_name(name_space(),
duke@435	135	"incrementTenuringThresholdForGcCost");
duke@435	136	_increment_tenuring_threshold_for_gc_cost_counter =
duke@435	137	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Events,
duke@435	138	(jlong)0, CHECK);
duke@435	139
duke@435	140	cname = PerfDataManager::counter_name(name_space(),
duke@435	141	"decrementTenuringThresholdForSurvivorLimit");
duke@435	142	_decrement_tenuring_threshold_for_survivor_limit_counter =
duke@435	143	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Events,
duke@435	144	(jlong)0, CHECK);
duke@435	145	cname = PerfDataManager::counter_name(name_space(),
duke@435	146	"changeYoungGenForMinPauses");
duke@435	147	_change_young_gen_for_min_pauses_counter =
duke@435	148	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Events,
duke@435	149	(jlong)0, CHECK);
duke@435	150
duke@435	151	cname = PerfDataManager::counter_name(name_space(),
duke@435	152	"changeOldGenForMajPauses");
duke@435	153	_change_old_gen_for_maj_pauses_counter =
duke@435	154	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Events,
duke@435	155	(jlong)0, CHECK);
duke@435	156
duke@435	157	cname = PerfDataManager::counter_name(name_space(),
duke@435	158	"increaseOldGenForThroughput");
duke@435	159	_change_old_gen_for_throughput_counter =
duke@435	160	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Events,
duke@435	161	(jlong)0, CHECK);
duke@435	162
duke@435	163	cname = PerfDataManager::counter_name(name_space(),
duke@435	164	"increaseYoungGenForThroughput");
duke@435	165	_change_young_gen_for_throughput_counter =
duke@435	166	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Events,
duke@435	167	(jlong)0, CHECK);
duke@435	168
duke@435	169	cname = PerfDataManager::counter_name(name_space(),
duke@435	170	"decreaseForFootprint");
duke@435	171	_decrease_for_footprint_counter =
duke@435	172	PerfDataManager::create_variable(SUN_GC, cname,
duke@435	173	PerfData::U_Events, (jlong)0, CHECK);
duke@435	174
duke@435	175	cname = PerfDataManager::counter_name(name_space(), "decideAtFullGc");
duke@435	176	_decide_at_full_gc_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	177	PerfData::U_None, (jlong)0, CHECK);
duke@435	178
duke@435	179	cname = PerfDataManager::counter_name(name_space(), "minorPauseYoungSlope");
duke@435	180	_minor_pause_young_slope_counter =
duke@435	181	PerfDataManager::create_variable(SUN_GC, cname,
duke@435	182	PerfData::U_None, (jlong) 0, CHECK);
duke@435	183
duke@435	184	cname = PerfDataManager::counter_name(name_space(), "majorCollectionSlope");
duke@435	185	_major_collection_slope_counter =
duke@435	186	PerfDataManager::create_variable(SUN_GC, cname,
duke@435	187	PerfData::U_None, (jlong) 0, CHECK);
duke@435	188
duke@435	189	cname = PerfDataManager::counter_name(name_space(), "minorCollectionSlope");
duke@435	190	_minor_collection_slope_counter =
duke@435	191	PerfDataManager::create_variable(SUN_GC, cname,
duke@435	192	PerfData::U_None, (jlong) 0, CHECK);
duke@435	193	}
duke@435	194	}
duke@435	195
duke@435	196	void GCAdaptivePolicyCounters::update_counters_from_policy() {
duke@435	197	if (UsePerfData && (size_policy() != NULL)) {
duke@435	198	update_avg_minor_pause_counter();
duke@435	199	update_avg_minor_interval_counter();
duke@435	200	#ifdef NOT_PRODUCT
duke@435	201	update_minor_pause_counter();
duke@435	202	#endif
duke@435	203	update_minor_gc_cost_counter();
duke@435	204	update_avg_young_live_counter();
duke@435	205
duke@435	206	update_survivor_size_counters();
duke@435	207	update_avg_survived_avg_counters();
duke@435	208	update_avg_survived_dev_counters();
duke@435	209	update_avg_survived_padded_avg_counters();
duke@435	210
duke@435	211	update_change_old_gen_for_throughput();
duke@435	212	update_change_young_gen_for_throughput();
duke@435	213	update_decrease_for_footprint();
duke@435	214	update_change_young_gen_for_min_pauses();
duke@435	215	update_change_old_gen_for_maj_pauses();
duke@435	216
duke@435	217	update_minor_pause_young_slope_counter();
duke@435	218	update_minor_collection_slope_counter();
duke@435	219	update_major_collection_slope_counter();
duke@435	220	}
duke@435	221	}
duke@435	222
duke@435	223	void GCAdaptivePolicyCounters::update_counters() {
duke@435	224	if (UsePerfData) {
duke@435	225	update_counters_from_policy();
duke@435	226	}
duke@435	227	}