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Issue 1988623002: Ensure black and gray objects are kept around by scavenger (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Fix for black pages Created 4 years, 7 months ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/heap/gc-tracer.h" 5 #include "src/heap/gc-tracer.h"
6 6
7 #include "src/counters.h" 7 #include "src/counters.h"
8 #include "src/heap/heap-inl.h" 8 #include "src/heap/heap-inl.h"
9 #include "src/isolate.h" 9 #include "src/isolate.h"
10 10
(...skipping 438 matching lines...) Expand 10 before | Expand all | Expand 10 after
449 449
450 450
451 void GCTracer::PrintNVP() const { 451 void GCTracer::PrintNVP() const {
452 double duration = current_.end_time - current_.start_time; 452 double duration = current_.end_time - current_.start_time;
453 double spent_in_mutator = current_.start_time - previous_.end_time; 453 double spent_in_mutator = current_.start_time - previous_.end_time;
454 intptr_t allocated_since_last_gc = 454 intptr_t allocated_since_last_gc =
455 current_.start_object_size - previous_.end_object_size; 455 current_.start_object_size - previous_.end_object_size;
456 456
457 switch (current_.type) { 457 switch (current_.type) {
458 case Event::SCAVENGER: 458 case Event::SCAVENGER:
459 PrintIsolate(heap_->isolate(), 459 PrintIsolate(
460 "%8.0f ms: " 460 heap_->isolate(),
461 "pause=%.1f " 461 "%8.0f ms: "
462 "mutator=%.1f " 462 "pause=%.1f "
463 "gc=%s " 463 "mutator=%.1f "
464 "reduce_memory=%d " 464 "gc=%s "
465 "scavenge=%.2f " 465 "reduce_memory=%d "
466 "old_new=%.2f " 466 "scavenge=%.2f "
467 "weak=%.2f " 467 "revive_marked_objects=%.2f "
468 "roots=%.2f " 468 "old_new=%.2f "
469 "code=%.2f " 469 "weak=%.2f "
470 "semispace=%.2f " 470 "roots=%.2f "
471 "object_groups=%.2f " 471 "code=%.2f "
472 "external_prologue=%.2f " 472 "semispace=%.2f "
473 "external_epilogue=%.2f " 473 "object_groups=%.2f "
474 "external_weak_global_handles=%.2f " 474 "external_prologue=%.2f "
475 "steps_count=%d " 475 "external_epilogue=%.2f "
476 "steps_took=%.1f " 476 "external_weak_global_handles=%.2f "
477 "scavenge_throughput=%.f " 477 "steps_count=%d "
478 "total_size_before=%" V8PRIdPTR 478 "steps_took=%.1f "
479 " " 479 "scavenge_throughput=%.f "
480 "total_size_after=%" V8PRIdPTR 480 "total_size_before=%" V8PRIdPTR
481 " " 481 " "
482 "holes_size_before=%" V8PRIdPTR 482 "total_size_after=%" V8PRIdPTR
483 " " 483 " "
484 "holes_size_after=%" V8PRIdPTR 484 "holes_size_before=%" V8PRIdPTR
485 " " 485 " "
486 "allocated=%" V8PRIdPTR 486 "holes_size_after=%" V8PRIdPTR
487 " " 487 " "
488 "promoted=%" V8PRIdPTR 488 "allocated=%" V8PRIdPTR
489 " " 489 " "
490 "semi_space_copied=%" V8PRIdPTR 490 "promoted=%" V8PRIdPTR
491 " " 491 " "
492 "nodes_died_in_new=%d " 492 "semi_space_copied=%" V8PRIdPTR
493 "nodes_copied_in_new=%d " 493 " "
494 "nodes_promoted=%d " 494 "nodes_died_in_new=%d "
495 "promotion_ratio=%.1f%% " 495 "nodes_copied_in_new=%d "
496 "average_survival_ratio=%.1f%% " 496 "nodes_promoted=%d "
497 "promotion_rate=%.1f%% " 497 "promotion_ratio=%.1f%% "
498 "semi_space_copy_rate=%.1f%% " 498 "average_survival_ratio=%.1f%% "
499 "new_space_allocation_throughput=%.1f " 499 "promotion_rate=%.1f%% "
500 "context_disposal_rate=%.1f\n", 500 "semi_space_copy_rate=%.1f%% "
501 heap_->isolate()->time_millis_since_init(), duration, 501 "new_space_allocation_throughput=%.1f "
502 spent_in_mutator, current_.TypeName(true), 502 "context_disposal_rate=%.1f\n",
503 current_.reduce_memory, 503 heap_->isolate()->time_millis_since_init(), duration,
504 current_.scopes[Scope::SCAVENGER_SCAVENGE], 504 spent_in_mutator, current_.TypeName(true), current_.reduce_memory,
505 current_.scopes[Scope::SCAVENGER_OLD_TO_NEW_POINTERS], 505 current_.scopes[Scope::SCAVENGER_SCAVENGE],
506 current_.scopes[Scope::SCAVENGER_WEAK], 506 current_.scopes[Scope::SCAVENGER_OBJECTS_MARKED_BY_MARK_COMPACT],
507 current_.scopes[Scope::SCAVENGER_ROOTS], 507 current_.scopes[Scope::SCAVENGER_OLD_TO_NEW_POINTERS],
508 current_.scopes[Scope::SCAVENGER_CODE_FLUSH_CANDIDATES], 508 current_.scopes[Scope::SCAVENGER_WEAK],
509 current_.scopes[Scope::SCAVENGER_SEMISPACE], 509 current_.scopes[Scope::SCAVENGER_ROOTS],
510 current_.scopes[Scope::SCAVENGER_OBJECT_GROUPS], 510 current_.scopes[Scope::SCAVENGER_CODE_FLUSH_CANDIDATES],
511 current_.scopes[Scope::SCAVENGER_EXTERNAL_PROLOGUE], 511 current_.scopes[Scope::SCAVENGER_SEMISPACE],
512 current_.scopes[Scope::SCAVENGER_EXTERNAL_EPILOGUE], 512 current_.scopes[Scope::SCAVENGER_OBJECT_GROUPS],
513 current_.scopes[Scope::EXTERNAL_WEAK_GLOBAL_HANDLES], 513 current_.scopes[Scope::SCAVENGER_EXTERNAL_PROLOGUE],
514 current_.incremental_marking_steps, 514 current_.scopes[Scope::SCAVENGER_EXTERNAL_EPILOGUE],
515 current_.incremental_marking_duration, 515 current_.scopes[Scope::EXTERNAL_WEAK_GLOBAL_HANDLES],
516 ScavengeSpeedInBytesPerMillisecond(), 516 current_.incremental_marking_steps,
517 current_.start_object_size, current_.end_object_size, 517 current_.incremental_marking_duration,
518 current_.start_holes_size, current_.end_holes_size, 518 ScavengeSpeedInBytesPerMillisecond(), current_.start_object_size,
519 allocated_since_last_gc, heap_->promoted_objects_size(), 519 current_.end_object_size, current_.start_holes_size,
520 heap_->semi_space_copied_object_size(), 520 current_.end_holes_size, allocated_since_last_gc,
521 heap_->nodes_died_in_new_space_, 521 heap_->promoted_objects_size(),
522 heap_->nodes_copied_in_new_space_, heap_->nodes_promoted_, 522 heap_->semi_space_copied_object_size(),
523 heap_->promotion_ratio_, AverageSurvivalRatio(), 523 heap_->nodes_died_in_new_space_, heap_->nodes_copied_in_new_space_,
524 heap_->promotion_rate_, heap_->semi_space_copied_rate_, 524 heap_->nodes_promoted_, heap_->promotion_ratio_,
525 NewSpaceAllocationThroughputInBytesPerMillisecond(), 525 AverageSurvivalRatio(), heap_->promotion_rate_,
526 ContextDisposalRateInMilliseconds()); 526 heap_->semi_space_copied_rate_,
527 NewSpaceAllocationThroughputInBytesPerMillisecond(),
528 ContextDisposalRateInMilliseconds());
527 break; 529 break;
528 case Event::MARK_COMPACTOR: 530 case Event::MARK_COMPACTOR:
529 case Event::INCREMENTAL_MARK_COMPACTOR: 531 case Event::INCREMENTAL_MARK_COMPACTOR:
530 PrintIsolate( 532 PrintIsolate(
531 heap_->isolate(), 533 heap_->isolate(),
532 "%8.0f ms: " 534 "%8.0f ms: "
533 "pause=%.1f " 535 "pause=%.1f "
534 "mutator=%.1f " 536 "mutator=%.1f "
535 "gc=%s " 537 "gc=%s "
536 "reduce_memory=%d " 538 "reduce_memory=%d "
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793 return sum / recorded_survival_ratios_.Count(); 795 return sum / recorded_survival_ratios_.Count();
794 } 796 }
795 797
796 bool GCTracer::SurvivalEventsRecorded() const { 798 bool GCTracer::SurvivalEventsRecorded() const {
797 return recorded_survival_ratios_.Count() > 0; 799 return recorded_survival_ratios_.Count() > 0;
798 } 800 }
799 801
800 void GCTracer::ResetSurvivalEvents() { recorded_survival_ratios_.Reset(); } 802 void GCTracer::ResetSurvivalEvents() { recorded_survival_ratios_.Reset(); }
801 } // namespace internal 803 } // namespace internal
802 } // namespace v8 804 } // namespace v8
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