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)");
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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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 _cur_string_dedup_queue_fixup_worker_times_ms(_max_gc_threads, "%.1lf"),
173 _cur_string_dedup_table_fixup_worker_times_ms(_max_gc_threads, "%.1lf")
174 {
175 assert(max_gc_threads > 0, "Must have some GC threads");
176 }
177
178 void G1GCPhaseTimes::note_gc_start(uint active_gc_threads) {
179 assert(active_gc_threads > 0, "The number of threads must be > 0");
180 assert(active_gc_threads <= _max_gc_threads, "The number of active threads must be <= the max nubmer of threads");
181 _active_gc_threads = active_gc_threads;
182
183 _last_gc_worker_start_times_ms.reset();
184 _last_ext_root_scan_times_ms.reset();
185 _last_satb_filtering_times_ms.reset();
186 _last_update_rs_times_ms.reset();
187 _last_update_rs_processed_buffers.reset();
188 _last_scan_rs_times_ms.reset();
189 _last_strong_code_root_scan_times_ms.reset();
190 _last_strong_code_root_mark_times_ms.reset();
191 _last_obj_copy_times_ms.reset();
192 _last_termination_times_ms.reset();
193 _last_termination_attempts.reset();
194 _last_gc_worker_end_times_ms.reset();
195 _last_gc_worker_times_ms.reset();
196 _last_gc_worker_other_times_ms.reset();
197
198 _cur_string_dedup_queue_fixup_worker_times_ms.reset();
199 _cur_string_dedup_table_fixup_worker_times_ms.reset();
200 }
201
202 void G1GCPhaseTimes::note_gc_end() {
203 _last_gc_worker_start_times_ms.verify();
204 _last_ext_root_scan_times_ms.verify();
205 _last_satb_filtering_times_ms.verify();
206 _last_update_rs_times_ms.verify();
207 _last_update_rs_processed_buffers.verify();
208 _last_scan_rs_times_ms.verify();
209 _last_strong_code_root_scan_times_ms.verify();
210 _last_strong_code_root_mark_times_ms.verify();
211 _last_obj_copy_times_ms.verify();
212 _last_termination_times_ms.verify();
213 _last_termination_attempts.verify();
214 _last_gc_worker_end_times_ms.verify();
215
216 for (uint i = 0; i < _active_gc_threads; i++) {
217 double worker_time = _last_gc_worker_end_times_ms.get(i) - _last_gc_worker_start_times_ms.get(i);
218 _last_gc_worker_times_ms.set(i, worker_time);
219
220 double worker_known_time = _last_ext_root_scan_times_ms.get(i) +
221 _last_satb_filtering_times_ms.get(i) +
222 _last_update_rs_times_ms.get(i) +
223 _last_scan_rs_times_ms.get(i) +
224 _last_strong_code_root_scan_times_ms.get(i) +
225 _last_strong_code_root_mark_times_ms.get(i) +
226 _last_obj_copy_times_ms.get(i) +
227 _last_termination_times_ms.get(i);
228
229 double worker_other_time = worker_time - worker_known_time;
230 _last_gc_worker_other_times_ms.set(i, worker_other_time);
231 }
232
233 _last_gc_worker_times_ms.verify();
234 _last_gc_worker_other_times_ms.verify();
235
236 _cur_string_dedup_queue_fixup_worker_times_ms.verify();
237 _cur_string_dedup_table_fixup_worker_times_ms.verify();
238 }
239
240 void G1GCPhaseTimes::note_string_dedup_fixup_start() {
241 _cur_string_dedup_queue_fixup_worker_times_ms.reset();
242 _cur_string_dedup_table_fixup_worker_times_ms.reset();
243 }
244
245 void G1GCPhaseTimes::note_string_dedup_fixup_end() {
246 _cur_string_dedup_queue_fixup_worker_times_ms.verify();
247 _cur_string_dedup_table_fixup_worker_times_ms.verify();
248 }
249
250 void G1GCPhaseTimes::print_stats(int level, const char* str, double value) {
251 LineBuffer(level).append_and_print_cr("[%s: %.1lf ms]", str, value);
252 }
253
254 void G1GCPhaseTimes::print_stats(int level, const char* str, double value, int workers) {
255 LineBuffer(level).append_and_print_cr("[%s: %.1lf ms, GC Workers: %d]", str, value, workers);
256 }
257
258 double G1GCPhaseTimes::accounted_time_ms() {
259 // Subtract the root region scanning wait time. It's initialized to
260 // zero at the start of the pause.
261 double misc_time_ms = _root_region_scan_wait_time_ms;
262
263 misc_time_ms += _cur_collection_par_time_ms;
264
265 // Now subtract the time taken to fix up roots in generated code
266 misc_time_ms += _cur_collection_code_root_fixup_time_ms;
267
268 // Strong code root migration time
269 misc_time_ms += _cur_strong_code_root_migration_time_ms;
270
271 // Now subtract the time taken to fix up weak roots
272 misc_time_ms += _cur_string_dedup_fixup_time_ms;
273
274 // Subtract the time taken to clean the card table from the
275 // current value of "other time"
276 misc_time_ms += _cur_clear_ct_time_ms;
277
278 return misc_time_ms;
279 }
280
281 void G1GCPhaseTimes::print(double pause_time_sec) {
282 if (_root_region_scan_wait_time_ms > 0.0) {
283 print_stats(1, "Root Region Scan Waiting", _root_region_scan_wait_time_ms);
284 }
285 if (G1CollectedHeap::use_parallel_gc_threads()) {
286 print_stats(1, "Parallel Time", _cur_collection_par_time_ms, _active_gc_threads);
287 _last_gc_worker_start_times_ms.print(2, "GC Worker Start (ms)");
288 _last_ext_root_scan_times_ms.print(2, "Ext Root Scanning (ms)");
289 if (_last_satb_filtering_times_ms.sum() > 0.0) {
290 _last_satb_filtering_times_ms.print(2, "SATB Filtering (ms)");
291 }
292 if (_last_strong_code_root_mark_times_ms.sum() > 0.0) {
293 _last_strong_code_root_mark_times_ms.print(2, "Code Root Marking (ms)");
303 }
304 _last_gc_worker_other_times_ms.print(2, "GC Worker Other (ms)");
305 _last_gc_worker_times_ms.print(2, "GC Worker Total (ms)");
306 _last_gc_worker_end_times_ms.print(2, "GC Worker End (ms)");
307 } else {
308 _last_ext_root_scan_times_ms.print(1, "Ext Root Scanning (ms)");
309 if (_last_satb_filtering_times_ms.sum() > 0.0) {
310 _last_satb_filtering_times_ms.print(1, "SATB Filtering (ms)");
311 }
312 if (_last_strong_code_root_mark_times_ms.sum() > 0.0) {
313 _last_strong_code_root_mark_times_ms.print(1, "Code Root Marking (ms)");
314 }
315 _last_update_rs_times_ms.print(1, "Update RS (ms)");
316 _last_update_rs_processed_buffers.print(2, "Processed Buffers");
317 _last_scan_rs_times_ms.print(1, "Scan RS (ms)");
318 _last_strong_code_root_scan_times_ms.print(1, "Code Root Scanning (ms)");
319 _last_obj_copy_times_ms.print(1, "Object Copy (ms)");
320 }
321 print_stats(1, "Code Root Fixup", _cur_collection_code_root_fixup_time_ms);
322 print_stats(1, "Code Root Migration", _cur_strong_code_root_migration_time_ms);
323 if (UseStringDeduplication) {
324 print_stats(1, "String Dedup Fixup", _cur_string_dedup_fixup_time_ms, _active_gc_threads);
325 _cur_string_dedup_queue_fixup_worker_times_ms.print(2, "Queue Fixup (ms)");
326 _cur_string_dedup_table_fixup_worker_times_ms.print(2, "Table Fixup (ms)");
327 }
328 print_stats(1, "Clear CT", _cur_clear_ct_time_ms);
329 double misc_time_ms = pause_time_sec * MILLIUNITS - accounted_time_ms();
330 print_stats(1, "Other", misc_time_ms);
331 if (_cur_verify_before_time_ms > 0.0) {
332 print_stats(2, "Verify Before", _cur_verify_before_time_ms);
333 }
334 print_stats(2, "Choose CSet",
335 (_recorded_young_cset_choice_time_ms +
336 _recorded_non_young_cset_choice_time_ms));
337 print_stats(2, "Ref Proc", _cur_ref_proc_time_ms);
338 print_stats(2, "Ref Enq", _cur_ref_enq_time_ms);
339 print_stats(2, "Free CSet",
340 (_recorded_young_free_cset_time_ms +
341 _recorded_non_young_free_cset_time_ms));
342 if (_cur_verify_after_time_ms > 0.0) {
343 print_stats(2, "Verify After", _cur_verify_after_time_ms);
344 }
345 }
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