8c9ca62a5e
If the embedder specifies an initial heap size, then we can take it as a hint to skip full GCs below that threshold. Bug: v8:9306 Change-Id: I42a4c597bf75c6ba9845ed7a6bd9946012979005 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1646515 Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#62030}
113 lines
4.3 KiB
C++
113 lines
4.3 KiB
C++
// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <cmath>
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#include <iostream>
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#include <limits>
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#include "src/objects/objects-inl.h"
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#include "src/objects/objects.h"
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#include "src/handles/handles-inl.h"
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#include "src/handles/handles.h"
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#include "src/heap/heap-controller.h"
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#include "test/unittests/test-utils.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace v8 {
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namespace internal {
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using MemoryControllerTest = TestWithIsolate;
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double Round(double x) {
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// Round to three digits.
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return floor(x * 1000 + 0.5) / 1000;
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}
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void CheckEqualRounded(double expected, double actual) {
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expected = Round(expected);
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actual = Round(actual);
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EXPECT_DOUBLE_EQ(expected, actual);
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}
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namespace {
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using V8Controller = MemoryController<V8HeapTrait>;
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} // namespace
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TEST_F(MemoryControllerTest, HeapGrowingFactor) {
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CheckEqualRounded(V8HeapTrait::kMaxGrowingFactor,
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V8Controller::DynamicGrowingFactor(34, 1, 4.0));
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CheckEqualRounded(3.553, V8Controller::DynamicGrowingFactor(45, 1, 4.0));
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CheckEqualRounded(2.830, V8Controller::DynamicGrowingFactor(50, 1, 4.0));
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CheckEqualRounded(1.478, V8Controller::DynamicGrowingFactor(100, 1, 4.0));
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CheckEqualRounded(1.193, V8Controller::DynamicGrowingFactor(200, 1, 4.0));
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CheckEqualRounded(1.121, V8Controller::DynamicGrowingFactor(300, 1, 4.0));
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CheckEqualRounded(V8Controller::DynamicGrowingFactor(300, 1, 4.0),
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V8Controller::DynamicGrowingFactor(600, 2, 4.0));
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CheckEqualRounded(V8HeapTrait::kMinGrowingFactor,
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V8Controller::DynamicGrowingFactor(400, 1, 4.0));
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}
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TEST_F(MemoryControllerTest, MaxHeapGrowingFactor) {
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CheckEqualRounded(1.3, V8Controller::MaxGrowingFactor(V8HeapTrait::kMinSize));
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CheckEqualRounded(1.600,
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V8Controller::MaxGrowingFactor(V8HeapTrait::kMaxSize / 2));
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CheckEqualRounded(2.0,
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V8Controller::MaxGrowingFactor(
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(V8HeapTrait::kMaxSize - Heap::kPointerMultiplier)));
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CheckEqualRounded(4.0, V8Controller::MaxGrowingFactor(
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static_cast<size_t>(V8HeapTrait::kMaxSize)));
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}
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TEST_F(MemoryControllerTest, OldGenerationAllocationLimit) {
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Heap* heap = i_isolate()->heap();
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size_t old_gen_size = 128 * MB;
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size_t max_old_generation_size = 512 * MB;
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double gc_speed = 100;
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double mutator_speed = 1;
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size_t new_space_capacity = 16 * MB;
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double factor = V8Controller::GrowingFactor(heap, max_old_generation_size,
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gc_speed, mutator_speed);
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EXPECT_EQ(static_cast<size_t>(old_gen_size * factor + new_space_capacity),
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V8Controller::CalculateAllocationLimit(
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heap, old_gen_size, 0u, max_old_generation_size,
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new_space_capacity, factor, Heap::HeapGrowingMode::kDefault));
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factor = Min(factor, V8HeapTrait::kConservativeGrowingFactor);
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EXPECT_EQ(static_cast<size_t>(old_gen_size * factor + new_space_capacity),
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V8Controller::CalculateAllocationLimit(
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heap, old_gen_size, 0u, max_old_generation_size,
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new_space_capacity, factor, Heap::HeapGrowingMode::kSlow));
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factor = Min(factor, V8HeapTrait::kConservativeGrowingFactor);
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EXPECT_EQ(
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static_cast<size_t>(old_gen_size * factor + new_space_capacity),
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V8Controller::CalculateAllocationLimit(
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heap, old_gen_size, 0u, max_old_generation_size, new_space_capacity,
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factor, Heap::HeapGrowingMode::kConservative));
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factor = V8HeapTrait::kMinGrowingFactor;
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EXPECT_EQ(static_cast<size_t>(old_gen_size * factor + new_space_capacity),
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V8Controller::CalculateAllocationLimit(
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heap, old_gen_size, 0u, max_old_generation_size,
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new_space_capacity, factor, Heap::HeapGrowingMode::kMinimal));
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factor = V8HeapTrait::kMinGrowingFactor;
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size_t min_old_generation_size =
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2 * static_cast<size_t>(old_gen_size * factor + new_space_capacity);
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EXPECT_EQ(
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min_old_generation_size,
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V8Controller::CalculateAllocationLimit(
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heap, old_gen_size, min_old_generation_size, max_old_generation_size,
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new_space_capacity, factor, Heap::HeapGrowingMode::kMinimal));
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}
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} // namespace internal
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} // namespace v8
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