144
145 template <class T>
146 void WorkerDataArray<T>::verify() {
147 for (uint i = 0; i < _length; i++) {
148 assert(_data[i] != _uninitialized,
149 err_msg("Invalid data for worker " UINT32_FORMAT ", data: %lf, uninitialized: %lf",
150 i, (double)_data[i], (double)_uninitialized));
151 }
152 }
153
154 #endif
155
156 G1GCPhaseTimes::G1GCPhaseTimes(uint max_gc_threads) :
157 _max_gc_threads(max_gc_threads),
158 _last_gc_worker_start_times_ms(_max_gc_threads, "%.1lf", false),
159 _last_ext_root_scan_times_ms(_max_gc_threads, "%.1lf"),
160 _last_satb_filtering_times_ms(_max_gc_threads, "%.1lf"),
161 _last_update_rs_times_ms(_max_gc_threads, "%.1lf"),
162 _last_update_rs_processed_buffers(_max_gc_threads, "%d"),
163 _last_scan_rs_times_ms(_max_gc_threads, "%.1lf"),
164 _last_obj_copy_times_ms(_max_gc_threads, "%.1lf"),
165 _last_termination_times_ms(_max_gc_threads, "%.1lf"),
166 _last_termination_attempts(_max_gc_threads, SIZE_FORMAT),
167 _last_gc_worker_end_times_ms(_max_gc_threads, "%.1lf", false),
168 _last_gc_worker_times_ms(_max_gc_threads, "%.1lf"),
169 _last_gc_worker_other_times_ms(_max_gc_threads, "%.1lf")
170 {
171 assert(max_gc_threads > 0, "Must have some GC threads");
172 }
173
174 void G1GCPhaseTimes::note_gc_start(uint active_gc_threads) {
175 assert(active_gc_threads > 0, "The number of threads must be > 0");
176 assert(active_gc_threads <= _max_gc_threads, "The number of active threads must be <= the max nubmer of threads");
177 _active_gc_threads = active_gc_threads;
178
179 _last_gc_worker_start_times_ms.reset();
180 _last_ext_root_scan_times_ms.reset();
181 _last_satb_filtering_times_ms.reset();
182 _last_update_rs_times_ms.reset();
183 _last_update_rs_processed_buffers.reset();
184 _last_scan_rs_times_ms.reset();
185 _last_obj_copy_times_ms.reset();
186 _last_termination_times_ms.reset();
187 _last_termination_attempts.reset();
188 _last_gc_worker_end_times_ms.reset();
189 _last_gc_worker_times_ms.reset();
190 _last_gc_worker_other_times_ms.reset();
191 }
192
193 void G1GCPhaseTimes::note_gc_end() {
194 _last_gc_worker_start_times_ms.verify();
195 _last_ext_root_scan_times_ms.verify();
196 _last_satb_filtering_times_ms.verify();
197 _last_update_rs_times_ms.verify();
198 _last_update_rs_processed_buffers.verify();
199 _last_scan_rs_times_ms.verify();
200 _last_obj_copy_times_ms.verify();
201 _last_termination_times_ms.verify();
202 _last_termination_attempts.verify();
203 _last_gc_worker_end_times_ms.verify();
204
205 for (uint i = 0; i < _active_gc_threads; i++) {
206 double worker_time = _last_gc_worker_end_times_ms.get(i) - _last_gc_worker_start_times_ms.get(i);
207 _last_gc_worker_times_ms.set(i, worker_time);
208
209 double worker_known_time = _last_ext_root_scan_times_ms.get(i) +
210 _last_satb_filtering_times_ms.get(i) +
211 _last_update_rs_times_ms.get(i) +
212 _last_scan_rs_times_ms.get(i) +
213 _last_obj_copy_times_ms.get(i) +
214 _last_termination_times_ms.get(i);
215
216 double worker_other_time = worker_time - worker_known_time;
217 _last_gc_worker_other_times_ms.set(i, worker_other_time);
218 }
219
220 _last_gc_worker_times_ms.verify();
221 _last_gc_worker_other_times_ms.verify();
222 }
223
224 void G1GCPhaseTimes::print_stats(int level, const char* str, double value) {
225 LineBuffer(level).append_and_print_cr("[%s: %.1lf ms]", str, value);
226 }
227
228 void G1GCPhaseTimes::print_stats(int level, const char* str, double value, int workers) {
229 LineBuffer(level).append_and_print_cr("[%s: %.1lf ms, GC Workers: %d]", str, value, workers);
230 }
231
232 double G1GCPhaseTimes::accounted_time_ms() {
233 // Subtract the root region scanning wait time. It's initialized to
234 // zero at the start of the pause.
235 double misc_time_ms = _root_region_scan_wait_time_ms;
236
237 misc_time_ms += _cur_collection_par_time_ms;
238
239 // Now subtract the time taken to fix up roots in generated code
240 misc_time_ms += _cur_collection_code_root_fixup_time_ms;
241
242 // Subtract the time taken to clean the card table from the
243 // current value of "other time"
244 misc_time_ms += _cur_clear_ct_time_ms;
245
246 return misc_time_ms;
247 }
248
249 void G1GCPhaseTimes::print(double pause_time_sec) {
250 if (_root_region_scan_wait_time_ms > 0.0) {
251 print_stats(1, "Root Region Scan Waiting", _root_region_scan_wait_time_ms);
252 }
253 if (G1CollectedHeap::use_parallel_gc_threads()) {
254 print_stats(1, "Parallel Time", _cur_collection_par_time_ms, _active_gc_threads);
255 _last_gc_worker_start_times_ms.print(2, "GC Worker Start (ms)");
256 _last_ext_root_scan_times_ms.print(2, "Ext Root Scanning (ms)");
257 if (_last_satb_filtering_times_ms.sum() > 0.0) {
258 _last_satb_filtering_times_ms.print(2, "SATB Filtering (ms)");
259 }
260 _last_update_rs_times_ms.print(2, "Update RS (ms)");
261 _last_update_rs_processed_buffers.print(3, "Processed Buffers");
262 _last_scan_rs_times_ms.print(2, "Scan RS (ms)");
263 _last_obj_copy_times_ms.print(2, "Object Copy (ms)");
264 _last_termination_times_ms.print(2, "Termination (ms)");
265 if (G1Log::finest()) {
266 _last_termination_attempts.print(3, "Termination Attempts");
267 }
268 _last_gc_worker_other_times_ms.print(2, "GC Worker Other (ms)");
269 _last_gc_worker_times_ms.print(2, "GC Worker Total (ms)");
270 _last_gc_worker_end_times_ms.print(2, "GC Worker End (ms)");
271 } else {
272 _last_ext_root_scan_times_ms.print(1, "Ext Root Scanning (ms)");
273 if (_last_satb_filtering_times_ms.sum() > 0.0) {
274 _last_satb_filtering_times_ms.print(1, "SATB Filtering (ms)");
275 }
276 _last_update_rs_times_ms.print(1, "Update RS (ms)");
277 _last_update_rs_processed_buffers.print(2, "Processed Buffers");
278 _last_scan_rs_times_ms.print(1, "Scan RS (ms)");
279 _last_obj_copy_times_ms.print(1, "Object Copy (ms)");
280 }
281 print_stats(1, "Code Root Fixup", _cur_collection_code_root_fixup_time_ms);
282 print_stats(1, "Clear CT", _cur_clear_ct_time_ms);
283 double misc_time_ms = pause_time_sec * MILLIUNITS - accounted_time_ms();
284 print_stats(1, "Other", misc_time_ms);
285 if (_cur_verify_before_time_ms > 0.0) {
286 print_stats(2, "Verify Before", _cur_verify_before_time_ms);
287 }
288 print_stats(2, "Choose CSet",
289 (_recorded_young_cset_choice_time_ms +
290 _recorded_non_young_cset_choice_time_ms));
291 print_stats(2, "Ref Proc", _cur_ref_proc_time_ms);
292 print_stats(2, "Ref Enq", _cur_ref_enq_time_ms);
293 print_stats(2, "Free CSet",
294 (_recorded_young_free_cset_time_ms +
295 _recorded_non_young_free_cset_time_ms));
296 if (_cur_verify_after_time_ms > 0.0) {
297 print_stats(2, "Verify After", _cur_verify_after_time_ms);
298 }
299 }
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144
145 template <class T>
146 void WorkerDataArray<T>::verify() {
147 for (uint i = 0; i < _length; i++) {
148 assert(_data[i] != _uninitialized,
149 err_msg("Invalid data for worker " UINT32_FORMAT ", data: %lf, uninitialized: %lf",
150 i, (double)_data[i], (double)_uninitialized));
151 }
152 }
153
154 #endif
155
156 G1GCPhaseTimes::G1GCPhaseTimes(uint max_gc_threads) :
157 _max_gc_threads(max_gc_threads),
158 _last_gc_worker_start_times_ms(_max_gc_threads, "%.1lf", false),
159 _last_ext_root_scan_times_ms(_max_gc_threads, "%.1lf"),
160 _last_satb_filtering_times_ms(_max_gc_threads, "%.1lf"),
161 _last_update_rs_times_ms(_max_gc_threads, "%.1lf"),
162 _last_update_rs_processed_buffers(_max_gc_threads, "%d"),
163 _last_scan_rs_times_ms(_max_gc_threads, "%.1lf"),
164 _last_strong_code_root_scan_times_ms(_max_gc_threads, "%.1lf"),
165 _last_strong_code_root_mark_times_ms(_max_gc_threads, "%.1lf"),
166 _last_obj_copy_times_ms(_max_gc_threads, "%.1lf"),
167 _last_termination_times_ms(_max_gc_threads, "%.1lf"),
168 _last_termination_attempts(_max_gc_threads, SIZE_FORMAT),
169 _last_gc_worker_end_times_ms(_max_gc_threads, "%.1lf", false),
170 _last_gc_worker_times_ms(_max_gc_threads, "%.1lf"),
171 _last_gc_worker_other_times_ms(_max_gc_threads, "%.1lf")
172 {
173 assert(max_gc_threads > 0, "Must have some GC threads");
174 }
175
176 void G1GCPhaseTimes::note_gc_start(uint active_gc_threads) {
177 assert(active_gc_threads > 0, "The number of threads must be > 0");
178 assert(active_gc_threads <= _max_gc_threads, "The number of active threads must be <= the max nubmer of threads");
179 _active_gc_threads = active_gc_threads;
180
181 _last_gc_worker_start_times_ms.reset();
182 _last_ext_root_scan_times_ms.reset();
183 _last_satb_filtering_times_ms.reset();
184 _last_update_rs_times_ms.reset();
185 _last_update_rs_processed_buffers.reset();
186 _last_scan_rs_times_ms.reset();
187 _last_strong_code_root_scan_times_ms.reset();
188 _last_strong_code_root_mark_times_ms.reset();
189 _last_obj_copy_times_ms.reset();
190 _last_termination_times_ms.reset();
191 _last_termination_attempts.reset();
192 _last_gc_worker_end_times_ms.reset();
193 _last_gc_worker_times_ms.reset();
194 _last_gc_worker_other_times_ms.reset();
195 }
196
197 void G1GCPhaseTimes::note_gc_end() {
198 _last_gc_worker_start_times_ms.verify();
199 _last_ext_root_scan_times_ms.verify();
200 _last_satb_filtering_times_ms.verify();
201 _last_update_rs_times_ms.verify();
202 _last_update_rs_processed_buffers.verify();
203 _last_scan_rs_times_ms.verify();
204 _last_strong_code_root_scan_times_ms.verify();
205 _last_strong_code_root_mark_times_ms.verify();
206 _last_obj_copy_times_ms.verify();
207 _last_termination_times_ms.verify();
208 _last_termination_attempts.verify();
209 _last_gc_worker_end_times_ms.verify();
210
211 for (uint i = 0; i < _active_gc_threads; i++) {
212 double worker_time = _last_gc_worker_end_times_ms.get(i) - _last_gc_worker_start_times_ms.get(i);
213 _last_gc_worker_times_ms.set(i, worker_time);
214
215 double worker_known_time = _last_ext_root_scan_times_ms.get(i) +
216 _last_satb_filtering_times_ms.get(i) +
217 _last_update_rs_times_ms.get(i) +
218 _last_scan_rs_times_ms.get(i) +
219 _last_strong_code_root_scan_times_ms.get(i) +
220 _last_strong_code_root_mark_times_ms.get(i) +
221 _last_obj_copy_times_ms.get(i) +
222 _last_termination_times_ms.get(i);
223
224 double worker_other_time = worker_time - worker_known_time;
225 _last_gc_worker_other_times_ms.set(i, worker_other_time);
226 }
227
228 _last_gc_worker_times_ms.verify();
229 _last_gc_worker_other_times_ms.verify();
230 }
231
232 void G1GCPhaseTimes::print_stats(int level, const char* str, double value) {
233 LineBuffer(level).append_and_print_cr("[%s: %.1lf ms]", str, value);
234 }
235
236 void G1GCPhaseTimes::print_stats(int level, const char* str, double value, int workers) {
237 LineBuffer(level).append_and_print_cr("[%s: %.1lf ms, GC Workers: %d]", str, value, workers);
238 }
239
240 double G1GCPhaseTimes::accounted_time_ms() {
241 // Subtract the root region scanning wait time. It's initialized to
242 // zero at the start of the pause.
243 double misc_time_ms = _root_region_scan_wait_time_ms;
244
245 misc_time_ms += _cur_collection_par_time_ms;
246
247 // Now subtract the time taken to fix up roots in generated code
248 misc_time_ms += _cur_collection_code_root_fixup_time_ms;
249
250 // Strong code root migration time
251 misc_time_ms += _cur_strong_code_root_migration_time_ms;
252
253 // Subtract the time taken to clean the card table from the
254 // current value of "other time"
255 misc_time_ms += _cur_clear_ct_time_ms;
256
257 return misc_time_ms;
258 }
259
260 void G1GCPhaseTimes::print(double pause_time_sec) {
261 if (_root_region_scan_wait_time_ms > 0.0) {
262 print_stats(1, "Root Region Scan Waiting", _root_region_scan_wait_time_ms);
263 }
264 if (G1CollectedHeap::use_parallel_gc_threads()) {
265 print_stats(1, "Parallel Time", _cur_collection_par_time_ms, _active_gc_threads);
266 _last_gc_worker_start_times_ms.print(2, "GC Worker Start (ms)");
267 _last_ext_root_scan_times_ms.print(2, "Ext Root Scanning (ms)");
268 if (_last_satb_filtering_times_ms.sum() > 0.0) {
269 _last_satb_filtering_times_ms.print(2, "SATB Filtering (ms)");
270 }
271 if (_last_strong_code_root_mark_times_ms.sum() > 0.0) {
272 _last_strong_code_root_mark_times_ms.print(2, "Code Root Marking (ms)");
273 }
274 _last_update_rs_times_ms.print(2, "Update RS (ms)");
275 _last_update_rs_processed_buffers.print(3, "Processed Buffers");
276 _last_scan_rs_times_ms.print(2, "Scan RS (ms)");
277 _last_strong_code_root_scan_times_ms.print(2, "Code Root Scanning (ms)");
278 _last_obj_copy_times_ms.print(2, "Object Copy (ms)");
279 _last_termination_times_ms.print(2, "Termination (ms)");
280 if (G1Log::finest()) {
281 _last_termination_attempts.print(3, "Termination Attempts");
282 }
283 _last_gc_worker_other_times_ms.print(2, "GC Worker Other (ms)");
284 _last_gc_worker_times_ms.print(2, "GC Worker Total (ms)");
285 _last_gc_worker_end_times_ms.print(2, "GC Worker End (ms)");
286 } else {
287 _last_ext_root_scan_times_ms.print(1, "Ext Root Scanning (ms)");
288 if (_last_satb_filtering_times_ms.sum() > 0.0) {
289 _last_satb_filtering_times_ms.print(1, "SATB Filtering (ms)");
290 }
291 if (_last_strong_code_root_mark_times_ms.sum() > 0.0) {
292 _last_strong_code_root_mark_times_ms.print(1, "Code Root Marking (ms)");
293 }
294 _last_update_rs_times_ms.print(1, "Update RS (ms)");
295 _last_update_rs_processed_buffers.print(2, "Processed Buffers");
296 _last_scan_rs_times_ms.print(1, "Scan RS (ms)");
297 _last_strong_code_root_scan_times_ms.print(1, "Code Root Scanning (ms)");
298 _last_obj_copy_times_ms.print(1, "Object Copy (ms)");
299 }
300 print_stats(1, "Code Root Fixup", _cur_collection_code_root_fixup_time_ms);
301 print_stats(1, "Code Root Migration", _cur_strong_code_root_migration_time_ms);
302 print_stats(1, "Clear CT", _cur_clear_ct_time_ms);
303 double misc_time_ms = pause_time_sec * MILLIUNITS - accounted_time_ms();
304 print_stats(1, "Other", misc_time_ms);
305 if (_cur_verify_before_time_ms > 0.0) {
306 print_stats(2, "Verify Before", _cur_verify_before_time_ms);
307 }
308 print_stats(2, "Choose CSet",
309 (_recorded_young_cset_choice_time_ms +
310 _recorded_non_young_cset_choice_time_ms));
311 print_stats(2, "Ref Proc", _cur_ref_proc_time_ms);
312 print_stats(2, "Ref Enq", _cur_ref_enq_time_ms);
313 print_stats(2, "Free CSet",
314 (_recorded_young_free_cset_time_ms +
315 _recorded_non_young_free_cset_time_ms));
316 if (_cur_verify_after_time_ms > 0.0) {
317 print_stats(2, "Verify After", _cur_verify_after_time_ms);
318 }
319 }
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