f341bb0f62
This reverts commit 0d2ed6c328.
The CL introduced perf regressions: crbug.com/735649.
We are going to reland the CL in an isolated V8 roll to ensure
that perf regressions are attributed correctly.
Original commit message:
> [heap] Allow a minimum semi-space size of 512K.
> This CL also reduces the minimum semi-space size to 512K.
> BUG=chromium:716032
BUG=chromium:735649
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I1f1b08ca6853347c00070f000c309d839ff8a4bb
Reviewed-on: https://chromium-review.googlesource.com/552541
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46349}
96 lines
3.1 KiB
C++
96 lines
3.1 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.h"
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#include "src/objects-inl.h"
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#include "src/handles.h"
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#include "src/handles-inl.h"
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#include "src/heap/heap.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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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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TEST(Heap, HeapGrowingFactor) {
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CheckEqualRounded(Heap::kMaxHeapGrowingFactor,
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Heap::HeapGrowingFactor(34, 1, 4.0));
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CheckEqualRounded(3.553, Heap::HeapGrowingFactor(45, 1, 4.0));
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CheckEqualRounded(2.830, Heap::HeapGrowingFactor(50, 1, 4.0));
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CheckEqualRounded(1.478, Heap::HeapGrowingFactor(100, 1, 4.0));
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CheckEqualRounded(1.193, Heap::HeapGrowingFactor(200, 1, 4.0));
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CheckEqualRounded(1.121, Heap::HeapGrowingFactor(300, 1, 4.0));
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CheckEqualRounded(Heap::HeapGrowingFactor(300, 1, 4.0),
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Heap::HeapGrowingFactor(600, 2, 4.0));
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CheckEqualRounded(Heap::kMinHeapGrowingFactor,
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Heap::HeapGrowingFactor(400, 1, 4.0));
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}
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TEST(Heap, MaxHeapGrowingFactor) {
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CheckEqualRounded(
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1.3, Heap::MaxHeapGrowingFactor(Heap::kMinOldGenerationSize * MB));
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CheckEqualRounded(
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1.600, Heap::MaxHeapGrowingFactor(Heap::kMaxOldGenerationSize / 2 * MB));
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CheckEqualRounded(
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1.999,
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Heap::MaxHeapGrowingFactor(
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(Heap::kMaxOldGenerationSize - Heap::kPointerMultiplier) * MB));
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CheckEqualRounded(4.0,
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Heap::MaxHeapGrowingFactor(
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static_cast<size_t>(Heap::kMaxOldGenerationSize) * MB));
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}
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TEST(Heap, SemiSpaceSize) {
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uint64_t configurations[][2] = {
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{0, 1 * i::Heap::kPointerMultiplier},
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{512 * i::MB, 1 * i::Heap::kPointerMultiplier},
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{1 * i::GB, 3 * i::Heap::kPointerMultiplier},
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{2 * static_cast<uint64_t>(i::GB), i::Heap::kMaxSemiSpaceSize},
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{4 * static_cast<uint64_t>(i::GB), i::Heap::kMaxSemiSpaceSize},
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{8 * static_cast<uint64_t>(i::GB), i::Heap::kMaxSemiSpaceSize}};
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for (auto configuration : configurations) {
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ASSERT_EQ(configuration[1],
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static_cast<uint64_t>(
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i::Heap::ComputeMaxSemiSpaceSize(configuration[0])));
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}
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}
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TEST(Heap, OldGenerationSize) {
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uint64_t configurations[][2] = {
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{0, i::Heap::kMinOldGenerationSize},
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{512, i::Heap::kMinOldGenerationSize},
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{1 * i::GB, 256 * i::Heap::kPointerMultiplier},
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{2 * static_cast<uint64_t>(i::GB), 512 * i::Heap::kPointerMultiplier},
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{4 * static_cast<uint64_t>(i::GB), i::Heap::kMaxOldGenerationSize},
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{8 * static_cast<uint64_t>(i::GB), i::Heap::kMaxOldGenerationSize}};
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for (auto configuration : configurations) {
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ASSERT_EQ(configuration[1],
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static_cast<uint64_t>(
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i::Heap::ComputeMaxOldGenerationSize(configuration[0])));
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}
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}
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} // namespace internal
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} // namespace v8
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