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src/share/vm/gc_implementation/concurrentMarkSweep/cmsGCAdaptivePolicyCounters.cpp@e018e6884bd8 (annotated)

src/share/vm/gc_implementation/concurrentMarkSweep/cmsGCAdaptivePolicyCounters.cpp

Wed, 23 Dec 2009 09:23:54 -0800

author

ysr

date

Wed, 23 Dec 2009 09:23:54 -0800

changeset 1580

e018e6884bd8

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6631166: CMS: better heuristics when combatting fragmentation
Summary: Autonomic per-worker free block cache sizing, tunable coalition policies, fixes to per-size block statistics, retuned gain and bandwidth of some feedback loop filters to allow quicker reactivity to abrupt changes in ambient demand, and other heuristics to reduce fragmentation of the CMS old gen. Also tightened some assertions, including those related to locking.
Reviewed-by: jmasa

duke@435	1	/*
duke@435	2	* Copyright 2004-2005 Sun Microsystems, Inc. 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	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	# include "incls/_precompiled.incl"
duke@435	26	# include "incls/_cmsGCAdaptivePolicyCounters.cpp.incl"
duke@435	27
duke@435	28	CMSGCAdaptivePolicyCounters::CMSGCAdaptivePolicyCounters(const char* name_arg,
duke@435	29	int collectors,
duke@435	30	int generations,
duke@435	31	AdaptiveSizePolicy* size_policy_arg)
duke@435	32	: GCAdaptivePolicyCounters(name_arg,
duke@435	33	collectors,
duke@435	34	generations,
duke@435	35	size_policy_arg) {
duke@435	36	if (UsePerfData) {
duke@435	37	EXCEPTION_MARK;
duke@435	38	ResourceMark rm;
duke@435	39
duke@435	40	const char* cname =
duke@435	41	PerfDataManager::counter_name(name_space(), "cmsCapacity");
duke@435	42	_cms_capacity_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	43	PerfData::U_Bytes, (jlong) OldSize, CHECK);
duke@435	44	#ifdef NOT_PRODUCT
duke@435	45	cname =
duke@435	46	PerfDataManager::counter_name(name_space(), "initialPause");
duke@435	47	_initial_pause_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	48	PerfData::U_Ticks,
duke@435	49	(jlong) cms_size_policy()->avg_initial_pause()->last_sample(),
duke@435	50	CHECK);
duke@435	51
duke@435	52	cname = PerfDataManager::counter_name(name_space(), "remarkPause");
duke@435	53	_remark_pause_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	54	PerfData::U_Ticks,
duke@435	55	(jlong) cms_size_policy()->avg_remark_pause()->last_sample(),
duke@435	56	CHECK);
duke@435	57	#endif
duke@435	58	cname =
duke@435	59	PerfDataManager::counter_name(name_space(), "avgInitialPause");
duke@435	60	_avg_initial_pause_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	61	PerfData::U_Ticks,
duke@435	62	(jlong) cms_size_policy()->avg_initial_pause()->average(),
duke@435	63	CHECK);
duke@435	64
duke@435	65	cname = PerfDataManager::counter_name(name_space(), "avgRemarkPause");
duke@435	66	_avg_remark_pause_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	67	PerfData::U_Ticks,
duke@435	68	(jlong) cms_size_policy()->avg_remark_pause()->average(),
duke@435	69	CHECK);
duke@435	70
duke@435	71	cname = PerfDataManager::counter_name(name_space(), "avgSTWGcCost");
duke@435	72	_avg_cms_STW_gc_cost_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	73	cname,
duke@435	74	PerfData::U_Ticks,
duke@435	75	(jlong) cms_size_policy()->avg_cms_STW_gc_cost()->average(),
duke@435	76	CHECK);
duke@435	77
duke@435	78	cname = PerfDataManager::counter_name(name_space(), "avgSTWTime");
duke@435	79	_avg_cms_STW_time_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	80	cname,
duke@435	81	PerfData::U_Ticks,
duke@435	82	(jlong) cms_size_policy()->avg_cms_STW_time()->average(),
duke@435	83	CHECK);
duke@435	84
duke@435	85
duke@435	86	cname = PerfDataManager::counter_name(name_space(), "avgConcurrentTime");
duke@435	87	_avg_concurrent_time_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	88	cname,
duke@435	89	PerfData::U_Ticks,
duke@435	90	(jlong) cms_size_policy()->avg_concurrent_time()->average(),
duke@435	91	CHECK);
duke@435	92
duke@435	93	cname =
duke@435	94	PerfDataManager::counter_name(name_space(), "avgConcurrentInterval");
duke@435	95	_avg_concurrent_interval_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	96	cname,
duke@435	97	PerfData::U_Ticks,
duke@435	98	(jlong) cms_size_policy()->avg_concurrent_interval()->average(),
duke@435	99	CHECK);
duke@435	100
duke@435	101	cname = PerfDataManager::counter_name(name_space(), "avgConcurrentGcCost");
duke@435	102	_avg_concurrent_gc_cost_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	103	cname,
duke@435	104	PerfData::U_Ticks,
duke@435	105	(jlong) cms_size_policy()->avg_concurrent_gc_cost()->average(),
duke@435	106	CHECK);
duke@435	107
duke@435	108	cname = PerfDataManager::counter_name(name_space(), "avgCMSFreeAtSweep");
duke@435	109	_avg_cms_free_at_sweep_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	110	cname,
duke@435	111	PerfData::U_Ticks,
duke@435	112	(jlong) cms_size_policy()->avg_cms_free_at_sweep()->average(),
duke@435	113	CHECK);
duke@435	114
duke@435	115	cname = PerfDataManager::counter_name(name_space(), "avgCMSFree");
duke@435	116	_avg_cms_free_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	117	cname,
duke@435	118	PerfData::U_Ticks,
duke@435	119	(jlong) cms_size_policy()->avg_cms_free()->average(),
duke@435	120	CHECK);
duke@435	121
duke@435	122	cname = PerfDataManager::counter_name(name_space(), "avgCMSPromo");
duke@435	123	_avg_cms_promo_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	124	cname,
duke@435	125	PerfData::U_Ticks,
duke@435	126	(jlong) cms_size_policy()->avg_cms_promo()->average(),
duke@435	127	CHECK);
duke@435	128
duke@435	129	cname = PerfDataManager::counter_name(name_space(), "avgMscPause");
duke@435	130	_avg_msc_pause_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	131	cname,
duke@435	132	PerfData::U_Ticks,
duke@435	133	(jlong) cms_size_policy()->avg_msc_pause()->average(),
duke@435	134	CHECK);
duke@435	135
duke@435	136	cname = PerfDataManager::counter_name(name_space(), "avgMscInterval");
duke@435	137	_avg_msc_interval_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	138	cname,
duke@435	139	PerfData::U_Ticks,
duke@435	140	(jlong) cms_size_policy()->avg_msc_interval()->average(),
duke@435	141	CHECK);
duke@435	142
duke@435	143	cname = PerfDataManager::counter_name(name_space(), "mscGcCost");
duke@435	144	_msc_gc_cost_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	145	cname,
duke@435	146	PerfData::U_Ticks,
duke@435	147	(jlong) cms_size_policy()->avg_msc_gc_cost()->average(),
duke@435	148	CHECK);
duke@435	149
duke@435	150	cname = PerfDataManager::counter_name(name_space(), "avgMsPause");
duke@435	151	_avg_ms_pause_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	152	cname,
duke@435	153	PerfData::U_Ticks,
duke@435	154	(jlong) cms_size_policy()->avg_ms_pause()->average(),
duke@435	155	CHECK);
duke@435	156
duke@435	157	cname = PerfDataManager::counter_name(name_space(), "avgMsInterval");
duke@435	158	_avg_ms_interval_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	159	cname,
duke@435	160	PerfData::U_Ticks,
duke@435	161	(jlong) cms_size_policy()->avg_ms_interval()->average(),
duke@435	162	CHECK);
duke@435	163
duke@435	164	cname = PerfDataManager::counter_name(name_space(), "msGcCost");
duke@435	165	_ms_gc_cost_counter = PerfDataManager::create_variable(SUN_GC,
duke@435	166	cname,
duke@435	167	PerfData::U_Ticks,
duke@435	168	(jlong) cms_size_policy()->avg_ms_gc_cost()->average(),
duke@435	169	CHECK);
duke@435	170
duke@435	171	cname = PerfDataManager::counter_name(name_space(), "majorGcCost");
duke@435	172	_major_gc_cost_counter = PerfDataManager::create_variable(SUN_GC, cname,
duke@435	173	PerfData::U_Ticks, (jlong) cms_size_policy()->cms_gc_cost(), CHECK);
duke@435	174
duke@435	175	cname = PerfDataManager::counter_name(name_space(), "avgPromotedAvg");
duke@435	176	_promoted_avg_counter =
duke@435	177	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
duke@435	178	cms_size_policy()->calculated_promo_size_in_bytes(), CHECK);
duke@435	179
duke@435	180	cname = PerfDataManager::counter_name(name_space(), "avgPromotedDev");
duke@435	181	_promoted_avg_dev_counter =
duke@435	182	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
duke@435	183	(jlong) 0 , CHECK);
duke@435	184
duke@435	185	cname = PerfDataManager::counter_name(name_space(), "avgPromotedPaddedAvg");
duke@435	186	_promoted_padded_avg_counter =
duke@435	187	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
duke@435	188	cms_size_policy()->calculated_promo_size_in_bytes(), CHECK);
duke@435	189
duke@435	190	cname = PerfDataManager::counter_name(name_space(),
duke@435	191	"changeYoungGenForMajPauses");
duke@435	192	_change_young_gen_for_maj_pauses_counter =
duke@435	193	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Events,
duke@435	194	(jlong)0, CHECK);
duke@435	195
duke@435	196	cname = PerfDataManager::counter_name(name_space(), "remarkPauseOldSlope");
duke@435	197	_remark_pause_old_slope_counter =
duke@435	198	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
duke@435	199	(jlong) cms_size_policy()->remark_pause_old_slope(), CHECK);
duke@435	200
duke@435	201	cname = PerfDataManager::counter_name(name_space(), "initialPauseOldSlope");
duke@435	202	_initial_pause_old_slope_counter =
duke@435	203	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
duke@435	204	(jlong) cms_size_policy()->initial_pause_old_slope(), CHECK);
duke@435	205
duke@435	206	cname =
duke@435	207	PerfDataManager::counter_name(name_space(), "remarkPauseYoungSlope") ;
duke@435	208	_remark_pause_young_slope_counter =
duke@435	209	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
duke@435	210	(jlong) cms_size_policy()->remark_pause_young_slope(), CHECK);
duke@435	211
duke@435	212	cname =
duke@435	213	PerfDataManager::counter_name(name_space(), "initialPauseYoungSlope");
duke@435	214	_initial_pause_young_slope_counter =
duke@435	215	PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,
duke@435	216	(jlong) cms_size_policy()->initial_pause_young_slope(), CHECK);
duke@435	217
duke@435	218
duke@435	219	}
duke@435	220	assert(size_policy()->is_gc_cms_adaptive_size_policy(),
duke@435	221	"Wrong type of size policy");
duke@435	222	}
duke@435	223
duke@435	224	void CMSGCAdaptivePolicyCounters::update_counters() {
duke@435	225	if (UsePerfData) {
duke@435	226	GCAdaptivePolicyCounters::update_counters_from_policy();
duke@435	227	update_counters_from_policy();
duke@435	228	}
duke@435	229	}
duke@435	230
duke@435	231	void CMSGCAdaptivePolicyCounters::update_counters(CMSGCStats* gc_stats) {
duke@435	232	if (UsePerfData) {
duke@435	233	update_counters();
duke@435	234	update_promoted((size_t) gc_stats->avg_promoted()->last_sample());
duke@435	235	update_avg_promoted_avg(gc_stats);
duke@435	236	update_avg_promoted_dev(gc_stats);
duke@435	237	update_avg_promoted_padded_avg(gc_stats);
duke@435	238	}
duke@435	239	}
duke@435	240
duke@435	241	void CMSGCAdaptivePolicyCounters::update_counters_from_policy() {
duke@435	242	if (UsePerfData && (cms_size_policy() != NULL)) {
duke@435	243
duke@435	244	GCAdaptivePolicyCounters::update_counters_from_policy();
duke@435	245
duke@435	246	update_major_gc_cost_counter();
duke@435	247	update_mutator_cost_counter();
duke@435	248
duke@435	249	update_eden_size();
duke@435	250	update_promo_size();
duke@435	251
duke@435	252	// If these updates from the last_sample() work,
duke@435	253	// revise the update methods for these counters
duke@435	254	// (both here and in PS).
duke@435	255	update_survived((size_t) cms_size_policy()->avg_survived()->last_sample());
duke@435	256
duke@435	257	update_avg_concurrent_time_counter();
duke@435	258	update_avg_concurrent_interval_counter();
duke@435	259	update_avg_concurrent_gc_cost_counter();
duke@435	260	#ifdef NOT_PRODUCT
duke@435	261	update_initial_pause_counter();
duke@435	262	update_remark_pause_counter();
duke@435	263	#endif
duke@435	264	update_avg_initial_pause_counter();
duke@435	265	update_avg_remark_pause_counter();
duke@435	266
duke@435	267	update_avg_cms_STW_time_counter();
duke@435	268	update_avg_cms_STW_gc_cost_counter();
duke@435	269
duke@435	270	update_avg_cms_free_counter();
duke@435	271	update_avg_cms_free_at_sweep_counter();
duke@435	272	update_avg_cms_promo_counter();
duke@435	273
duke@435	274	update_avg_msc_pause_counter();
duke@435	275	update_avg_msc_interval_counter();
duke@435	276	update_msc_gc_cost_counter();
duke@435	277
duke@435	278	update_avg_ms_pause_counter();
duke@435	279	update_avg_ms_interval_counter();
duke@435	280	update_ms_gc_cost_counter();
duke@435	281
duke@435	282	update_avg_old_live_counter();
duke@435	283
duke@435	284	update_survivor_size_counters();
duke@435	285	update_avg_survived_avg_counters();
duke@435	286	update_avg_survived_dev_counters();
duke@435	287
duke@435	288	update_decrement_tenuring_threshold_for_gc_cost();
duke@435	289	update_increment_tenuring_threshold_for_gc_cost();
duke@435	290	update_decrement_tenuring_threshold_for_survivor_limit();
duke@435	291
duke@435	292	update_change_young_gen_for_maj_pauses();
duke@435	293
duke@435	294	update_major_collection_slope_counter();
duke@435	295	update_remark_pause_old_slope_counter();
duke@435	296	update_initial_pause_old_slope_counter();
duke@435	297	update_remark_pause_young_slope_counter();
duke@435	298	update_initial_pause_young_slope_counter();
duke@435	299
duke@435	300	update_decide_at_full_gc_counter();
duke@435	301	}
duke@435	302	}