1 /*
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
30 #include "logging/log.hpp"
31
32 G1IHOPControl::G1IHOPControl(double initial_ihop_percent, size_t target_occupancy) :
33 _initial_ihop_percent(initial_ihop_percent),
34 _target_occupancy(target_occupancy),
35 _last_allocated_bytes(0),
36 _last_allocation_time_s(0.0)
37 {
38 assert(_initial_ihop_percent >= 0.0 && _initial_ihop_percent <= 100.0, "Initial IHOP value must be between 0 and 100 but is %.3f", initial_ihop_percent);
39 }
40
41 void G1IHOPControl::update_allocation_info(double allocation_time_s, size_t allocated_bytes, size_t additional_buffer_size) {
42 assert(allocation_time_s >= 0.0, "Allocation time must be positive but is %.3f", allocation_time_s);
43
44 _last_allocation_time_s = allocation_time_s;
45 _last_allocated_bytes = allocated_bytes;
46 }
47
48 void G1IHOPControl::print() {
49 size_t cur_conc_mark_start_threshold = get_conc_mark_start_threshold();
50 log_debug(gc, ihop)("Basic information (value update), threshold: " SIZE_FORMAT "B (%1.2f), target occupancy: " SIZE_FORMAT "B, current occupancy: " SIZE_FORMAT "B,"
51 " recent old gen allocation rate: %1.2f, recent marking phase length: %1.2f",
52 cur_conc_mark_start_threshold,
53 cur_conc_mark_start_threshold * 100.0 / _target_occupancy,
54 _target_occupancy,
55 G1CollectedHeap::heap()->used(),
56 _last_allocation_time_s > 0.0 ? _last_allocated_bytes / _last_allocation_time_s : 0.0,
57 last_marking_length_s());
58 }
59
60 void G1IHOPControl::send_trace_event(G1NewTracer* tracer) {
61 tracer->report_basic_ihop_statistics(get_conc_mark_start_threshold(),
62 _target_occupancy,
63 G1CollectedHeap::heap()->used(),
64 _last_allocated_bytes,
65 _last_allocation_time_s,
66 last_marking_length_s());
67 }
68
69 G1StaticIHOPControl::G1StaticIHOPControl(double ihop_percent, size_t target_occupancy) :
70 G1IHOPControl(ihop_percent, target_occupancy),
71 _last_marking_length_s(0.0) {
72 assert(_target_occupancy > 0, "Target occupancy must be larger than zero.");
73 }
74
75 #ifndef PRODUCT
76 static void test_update(G1IHOPControl* ctrl, double alloc_time, size_t alloc_amount, size_t young_size, double mark_time) {
77 for (int i = 0; i < 100; i++) {
174
175 void G1AdaptiveIHOPControl::update_allocation_info(double allocation_time_s,
176 size_t allocated_bytes,
177 size_t additional_buffer_size) {
178 G1IHOPControl::update_allocation_info(allocation_time_s, allocated_bytes, additional_buffer_size);
179
180 double allocation_rate = (double) allocated_bytes / allocation_time_s;
181 _allocation_rate_s.add(allocation_rate);
182
183 _last_unrestrained_young_size = additional_buffer_size;
184 }
185
186 void G1AdaptiveIHOPControl::update_marking_length(double marking_length_s) {
187 assert(marking_length_s >= 0.0, "Marking length must be larger than zero but is %.3f", marking_length_s);
188 _marking_times_s.add(marking_length_s);
189 }
190
191 void G1AdaptiveIHOPControl::print() {
192 G1IHOPControl::print();
193 size_t actual_target = actual_target_threshold();
194 log_debug(gc, ihop)("Adaptive IHOP information (value update), threshold: " SIZE_FORMAT "B (%1.2f), internal target occupancy: " SIZE_FORMAT "B,"
195 " predicted old gen allocation rate: %1.2f, predicted marking phase length: %1.2f, prediction active: %s",
196 get_conc_mark_start_threshold(),
197 percent_of(get_conc_mark_start_threshold(), actual_target),
198 actual_target,
199 _predictor->get_new_prediction(&_allocation_rate_s),
200 _predictor->get_new_prediction(&_marking_times_s),
201 have_enough_data_for_prediction() ? "true" : "false");
202 }
203
204 void G1AdaptiveIHOPControl::send_trace_event(G1NewTracer* tracer) {
205 G1IHOPControl::send_trace_event(tracer);
206 tracer->report_adaptive_ihop_statistics(get_conc_mark_start_threshold(),
207 actual_target_threshold(),
208 G1CollectedHeap::heap()->used(),
209 _last_unrestrained_young_size,
210 _predictor->get_new_prediction(&_allocation_rate_s),
211 _predictor->get_new_prediction(&_marking_times_s),
212 have_enough_data_for_prediction());
213 }
214
215 #ifndef PRODUCT
216 void G1AdaptiveIHOPControl::test() {
217 size_t const initial_threshold = 45;
218 size_t const young_size = 10;
219 size_t const target_size = 100;
220
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1 /*
2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
30 #include "logging/log.hpp"
31
32 G1IHOPControl::G1IHOPControl(double initial_ihop_percent, size_t target_occupancy) :
33 _initial_ihop_percent(initial_ihop_percent),
34 _target_occupancy(target_occupancy),
35 _last_allocated_bytes(0),
36 _last_allocation_time_s(0.0)
37 {
38 assert(_initial_ihop_percent >= 0.0 && _initial_ihop_percent <= 100.0, "Initial IHOP value must be between 0 and 100 but is %.3f", initial_ihop_percent);
39 }
40
41 void G1IHOPControl::update_allocation_info(double allocation_time_s, size_t allocated_bytes, size_t additional_buffer_size) {
42 assert(allocation_time_s >= 0.0, "Allocation time must be positive but is %.3f", allocation_time_s);
43
44 _last_allocation_time_s = allocation_time_s;
45 _last_allocated_bytes = allocated_bytes;
46 }
47
48 void G1IHOPControl::print() {
49 size_t cur_conc_mark_start_threshold = get_conc_mark_start_threshold();
50 log_debug(gc, ihop)("Basic information (value update), threshold: " SIZE_FORMAT "B (%1.2f), target occupancy: " SIZE_FORMAT "B, current occupancy: " SIZE_FORMAT "B, "
51 "recent allocation size: " SIZE_FORMAT "B, recent allocation duration: %1.2fms, recent old gen allocation rate: %1.2fB/s, recent marking phase length: %1.2fms",
52 cur_conc_mark_start_threshold,
53 cur_conc_mark_start_threshold * 100.0 / _target_occupancy,
54 _target_occupancy,
55 G1CollectedHeap::heap()->used(),
56 _last_allocated_bytes,
57 _last_allocation_time_s * 1000.0,
58 _last_allocation_time_s > 0.0 ? _last_allocated_bytes / _last_allocation_time_s : 0.0,
59 last_marking_length_s() * 1000.0);
60 }
61
62 void G1IHOPControl::send_trace_event(G1NewTracer* tracer) {
63 tracer->report_basic_ihop_statistics(get_conc_mark_start_threshold(),
64 _target_occupancy,
65 G1CollectedHeap::heap()->used(),
66 _last_allocated_bytes,
67 _last_allocation_time_s,
68 last_marking_length_s());
69 }
70
71 G1StaticIHOPControl::G1StaticIHOPControl(double ihop_percent, size_t target_occupancy) :
72 G1IHOPControl(ihop_percent, target_occupancy),
73 _last_marking_length_s(0.0) {
74 assert(_target_occupancy > 0, "Target occupancy must be larger than zero.");
75 }
76
77 #ifndef PRODUCT
78 static void test_update(G1IHOPControl* ctrl, double alloc_time, size_t alloc_amount, size_t young_size, double mark_time) {
79 for (int i = 0; i < 100; i++) {
176
177 void G1AdaptiveIHOPControl::update_allocation_info(double allocation_time_s,
178 size_t allocated_bytes,
179 size_t additional_buffer_size) {
180 G1IHOPControl::update_allocation_info(allocation_time_s, allocated_bytes, additional_buffer_size);
181
182 double allocation_rate = (double) allocated_bytes / allocation_time_s;
183 _allocation_rate_s.add(allocation_rate);
184
185 _last_unrestrained_young_size = additional_buffer_size;
186 }
187
188 void G1AdaptiveIHOPControl::update_marking_length(double marking_length_s) {
189 assert(marking_length_s >= 0.0, "Marking length must be larger than zero but is %.3f", marking_length_s);
190 _marking_times_s.add(marking_length_s);
191 }
192
193 void G1AdaptiveIHOPControl::print() {
194 G1IHOPControl::print();
195 size_t actual_target = actual_target_threshold();
196 log_debug(gc, ihop)("Adaptive IHOP information (value update), threshold: " SIZE_FORMAT "B (%1.2f), internal target occupancy: " SIZE_FORMAT "B, "
197 "occupancy: " SIZE_FORMAT "B, additional buffer size: " SIZE_FORMAT "B, predicted old gen allocation rate: %1.2fB/s, "
198 "predicted marking phase length: %1.2fms, prediction active: %s",
199 get_conc_mark_start_threshold(),
200 percent_of(get_conc_mark_start_threshold(), actual_target),
201 actual_target,
202 G1CollectedHeap::heap()->used(),
203 _last_unrestrained_young_size,
204 _predictor->get_new_prediction(&_allocation_rate_s),
205 _predictor->get_new_prediction(&_marking_times_s) * 1000.0,
206 have_enough_data_for_prediction() ? "true" : "false");
207 }
208
209 void G1AdaptiveIHOPControl::send_trace_event(G1NewTracer* tracer) {
210 G1IHOPControl::send_trace_event(tracer);
211 tracer->report_adaptive_ihop_statistics(get_conc_mark_start_threshold(),
212 actual_target_threshold(),
213 G1CollectedHeap::heap()->used(),
214 _last_unrestrained_young_size,
215 _predictor->get_new_prediction(&_allocation_rate_s),
216 _predictor->get_new_prediction(&_marking_times_s),
217 have_enough_data_for_prediction());
218 }
219
220 #ifndef PRODUCT
221 void G1AdaptiveIHOPControl::test() {
222 size_t const initial_threshold = 45;
223 size_t const young_size = 10;
224 size_t const target_size = 100;
225
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