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src/share/vm/gc_implementation/g1/g1StringDedupStat.cpp@595c0f60d50d (annotated)

src/share/vm/gc_implementation/g1/g1StringDedupStat.cpp

Tue, 18 Mar 2014 19:07:22 +0100

author

pliden

date

Tue, 18 Mar 2014 19:07:22 +0100

changeset 6413

595c0f60d50d

parent 0

f90c822e73f8

child 9327

f96fcd9e1e1b

permissions

-rw-r--r--

8029075: String deduplication in G1
Summary: Implementation of JEP 192, http://openjdk.java.net/jeps/192
Reviewed-by: brutisso, tschatzl, coleenp

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#include "precompiled.hpp"
aoqi@0	26	#include "gc_implementation/g1/g1StringDedupStat.hpp"
aoqi@0	27
aoqi@0	28	G1StringDedupStat::G1StringDedupStat() :
aoqi@0	29	_inspected(0),
aoqi@0	30	_skipped(0),
aoqi@0	31	_hashed(0),
aoqi@0	32	_known(0),
aoqi@0	33	_new(0),
aoqi@0	34	_new_bytes(0),
aoqi@0	35	_deduped(0),
aoqi@0	36	_deduped_bytes(0),
aoqi@0	37	_deduped_young(0),
aoqi@0	38	_deduped_young_bytes(0),
aoqi@0	39	_deduped_old(0),
aoqi@0	40	_deduped_old_bytes(0),
aoqi@0	41	_idle(0),
aoqi@0	42	_exec(0),
aoqi@0	43	_block(0),
aoqi@0	44	_start(0.0),
aoqi@0	45	_idle_elapsed(0.0),
aoqi@0	46	_exec_elapsed(0.0),
aoqi@0	47	_block_elapsed(0.0) {
aoqi@0	48	}
aoqi@0	49
aoqi@0	50	void G1StringDedupStat::add(const G1StringDedupStat& stat) {
aoqi@0	51	_inspected += stat._inspected;
aoqi@0	52	_skipped += stat._skipped;
aoqi@0	53	_hashed += stat._hashed;
aoqi@0	54	_known += stat._known;
aoqi@0	55	_new += stat._new;
aoqi@0	56	_new_bytes += stat._new_bytes;
aoqi@0	57	_deduped += stat._deduped;
aoqi@0	58	_deduped_bytes += stat._deduped_bytes;
aoqi@0	59	_deduped_young += stat._deduped_young;
aoqi@0	60	_deduped_young_bytes += stat._deduped_young_bytes;
aoqi@0	61	_deduped_old += stat._deduped_old;
aoqi@0	62	_deduped_old_bytes += stat._deduped_old_bytes;
aoqi@0	63	_idle += stat._idle;
aoqi@0	64	_exec += stat._exec;
aoqi@0	65	_block += stat._block;
aoqi@0	66	_idle_elapsed += stat._idle_elapsed;
aoqi@0	67	_exec_elapsed += stat._exec_elapsed;
aoqi@0	68	_block_elapsed += stat._block_elapsed;
aoqi@0	69	}
aoqi@0	70
aoqi@0	71	void G1StringDedupStat::print_summary(outputStream* st, const G1StringDedupStat& last_stat, const G1StringDedupStat& total_stat) {
aoqi@0	72	double total_deduped_bytes_percent = 0.0;
aoqi@0	73
aoqi@0	74	if (total_stat._new_bytes > 0) {
aoqi@0	75	// Avoid division by zero
aoqi@0	76	total_deduped_bytes_percent = (double)total_stat._deduped_bytes / (double)total_stat._new_bytes * 100.0;
aoqi@0	77	}
aoqi@0	78
aoqi@0	79	st->date_stamp(PrintGCDateStamps);
aoqi@0	80	st->stamp(PrintGCTimeStamps);
aoqi@0	81	st->print_cr(
aoqi@0	82	"[GC concurrent-string-deduplication, "
aoqi@0	83	G1_STRDEDUP_BYTES_FORMAT_NS"->"G1_STRDEDUP_BYTES_FORMAT_NS"("G1_STRDEDUP_BYTES_FORMAT_NS"), avg "
aoqi@0	84	G1_STRDEDUP_PERCENT_FORMAT_NS", "G1_STRDEDUP_TIME_FORMAT"]",
aoqi@0	85	G1_STRDEDUP_BYTES_PARAM(last_stat._new_bytes),
aoqi@0	86	G1_STRDEDUP_BYTES_PARAM(last_stat._new_bytes - last_stat._deduped_bytes),
aoqi@0	87	G1_STRDEDUP_BYTES_PARAM(last_stat._deduped_bytes),
aoqi@0	88	total_deduped_bytes_percent,
aoqi@0	89	last_stat._exec_elapsed);
aoqi@0	90	}
aoqi@0	91
aoqi@0	92	void G1StringDedupStat::print_statistics(outputStream* st, const G1StringDedupStat& stat, bool total) {
aoqi@0	93	double young_percent = 0.0;
aoqi@0	94	double old_percent = 0.0;
aoqi@0	95	double skipped_percent = 0.0;
aoqi@0	96	double hashed_percent = 0.0;
aoqi@0	97	double known_percent = 0.0;
aoqi@0	98	double new_percent = 0.0;
aoqi@0	99	double deduped_percent = 0.0;
aoqi@0	100	double deduped_bytes_percent = 0.0;
aoqi@0	101	double deduped_young_percent = 0.0;
aoqi@0	102	double deduped_young_bytes_percent = 0.0;
aoqi@0	103	double deduped_old_percent = 0.0;
aoqi@0	104	double deduped_old_bytes_percent = 0.0;
aoqi@0	105
aoqi@0	106	if (stat._inspected > 0) {
aoqi@0	107	// Avoid division by zero
aoqi@0	108	skipped_percent = (double)stat._skipped / (double)stat._inspected * 100.0;
aoqi@0	109	hashed_percent = (double)stat._hashed / (double)stat._inspected * 100.0;
aoqi@0	110	known_percent = (double)stat._known / (double)stat._inspected * 100.0;
aoqi@0	111	new_percent = (double)stat._new / (double)stat._inspected * 100.0;
aoqi@0	112	}
aoqi@0	113
aoqi@0	114	if (stat._new > 0) {
aoqi@0	115	// Avoid division by zero
aoqi@0	116	deduped_percent = (double)stat._deduped / (double)stat._new * 100.0;
aoqi@0	117	}
aoqi@0	118
aoqi@0	119	if (stat._deduped > 0) {
aoqi@0	120	// Avoid division by zero
aoqi@0	121	deduped_young_percent = (double)stat._deduped_young / (double)stat._deduped * 100.0;
aoqi@0	122	deduped_old_percent = (double)stat._deduped_old / (double)stat._deduped * 100.0;
aoqi@0	123	}
aoqi@0	124
aoqi@0	125	if (stat._new_bytes > 0) {
aoqi@0	126	// Avoid division by zero
aoqi@0	127	deduped_bytes_percent = (double)stat._deduped_bytes / (double)stat._new_bytes * 100.0;
aoqi@0	128	}
aoqi@0	129
aoqi@0	130	if (stat._deduped_bytes > 0) {
aoqi@0	131	// Avoid division by zero
aoqi@0	132	deduped_young_bytes_percent = (double)stat._deduped_young_bytes / (double)stat._deduped_bytes * 100.0;
aoqi@0	133	deduped_old_bytes_percent = (double)stat._deduped_old_bytes / (double)stat._deduped_bytes * 100.0;
aoqi@0	134	}
aoqi@0	135
aoqi@0	136	if (total) {
aoqi@0	137	st->print_cr(
aoqi@0	138	" [Total Exec: "UINTX_FORMAT"/"G1_STRDEDUP_TIME_FORMAT", Idle: "UINTX_FORMAT"/"G1_STRDEDUP_TIME_FORMAT", Blocked: "UINTX_FORMAT"/"G1_STRDEDUP_TIME_FORMAT"]",
aoqi@0	139	stat._exec, stat._exec_elapsed, stat._idle, stat._idle_elapsed, stat._block, stat._block_elapsed);
aoqi@0	140	} else {
aoqi@0	141	st->print_cr(
aoqi@0	142	" [Last Exec: "G1_STRDEDUP_TIME_FORMAT", Idle: "G1_STRDEDUP_TIME_FORMAT", Blocked: "UINTX_FORMAT"/"G1_STRDEDUP_TIME_FORMAT"]",
aoqi@0	143	stat._exec_elapsed, stat._idle_elapsed, stat._block, stat._block_elapsed);
aoqi@0	144	}
aoqi@0	145	st->print_cr(
aoqi@0	146	" [Inspected: "G1_STRDEDUP_OBJECTS_FORMAT"]\n"
aoqi@0	147	" [Skipped: "G1_STRDEDUP_OBJECTS_FORMAT"("G1_STRDEDUP_PERCENT_FORMAT")]\n"
aoqi@0	148	" [Hashed: "G1_STRDEDUP_OBJECTS_FORMAT"("G1_STRDEDUP_PERCENT_FORMAT")]\n"
aoqi@0	149	" [Known: "G1_STRDEDUP_OBJECTS_FORMAT"("G1_STRDEDUP_PERCENT_FORMAT")]\n"
aoqi@0	150	" [New: "G1_STRDEDUP_OBJECTS_FORMAT"("G1_STRDEDUP_PERCENT_FORMAT") "G1_STRDEDUP_BYTES_FORMAT"]\n"
aoqi@0	151	" [Deduplicated: "G1_STRDEDUP_OBJECTS_FORMAT"("G1_STRDEDUP_PERCENT_FORMAT") "G1_STRDEDUP_BYTES_FORMAT"("G1_STRDEDUP_PERCENT_FORMAT")]\n"
aoqi@0	152	" [Young: "G1_STRDEDUP_OBJECTS_FORMAT"("G1_STRDEDUP_PERCENT_FORMAT") "G1_STRDEDUP_BYTES_FORMAT"("G1_STRDEDUP_PERCENT_FORMAT")]\n"
aoqi@0	153	" [Old: "G1_STRDEDUP_OBJECTS_FORMAT"("G1_STRDEDUP_PERCENT_FORMAT") "G1_STRDEDUP_BYTES_FORMAT"("G1_STRDEDUP_PERCENT_FORMAT")]",
aoqi@0	154	stat._inspected,
aoqi@0	155	stat._skipped, skipped_percent,
aoqi@0	156	stat._hashed, hashed_percent,
aoqi@0	157	stat._known, known_percent,
aoqi@0	158	stat._new, new_percent, G1_STRDEDUP_BYTES_PARAM(stat._new_bytes),
aoqi@0	159	stat._deduped, deduped_percent, G1_STRDEDUP_BYTES_PARAM(stat._deduped_bytes), deduped_bytes_percent,
aoqi@0	160	stat._deduped_young, deduped_young_percent, G1_STRDEDUP_BYTES_PARAM(stat._deduped_young_bytes), deduped_young_bytes_percent,
aoqi@0	161	stat._deduped_old, deduped_old_percent, G1_STRDEDUP_BYTES_PARAM(stat._deduped_old_bytes), deduped_old_bytes_percent);
aoqi@0	162	}