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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/testapp.h>
#include <vespa/vespalib/datastore/entryref.h>
#include <vespa/vespalib/datastore/array_store_config.h>
using namespace search::datastore;
using AllocSpec = ArrayStoreConfig::AllocSpec;
constexpr float ALLOC_GROW_FACTOR = 0.2;
struct Fixture
{
using EntryRefType = EntryRefT<18>;
ArrayStoreConfig cfg;
Fixture(uint32_t maxSmallArraySize,
const AllocSpec &defaultSpec)
: cfg(maxSmallArraySize, defaultSpec) {}
Fixture(uint32_t maxSmallArraySize,
size_t hugePageSize,
size_t smallPageSize,
size_t minNumArraysForNewBuffer)
: cfg(ArrayStoreConfig::optimizeForHugePage(maxSmallArraySize, hugePageSize, smallPageSize,
sizeof(int), EntryRefType::offsetSize(),
minNumArraysForNewBuffer,
ALLOC_GROW_FACTOR)) { }
void assertSpec(size_t arraySize, uint32_t numArraysForNewBuffer) {
assertSpec(arraySize, AllocSpec(0, EntryRefType::offsetSize(),
numArraysForNewBuffer, ALLOC_GROW_FACTOR));
}
void assertSpec(size_t arraySize, const AllocSpec &expSpec) {
const ArrayStoreConfig::AllocSpec &actSpec = cfg.specForSize(arraySize);
EXPECT_EQUAL(expSpec.minArraysInBuffer, actSpec.minArraysInBuffer);
EXPECT_EQUAL(expSpec.maxArraysInBuffer, actSpec.maxArraysInBuffer);
EXPECT_EQUAL(expSpec.numArraysForNewBuffer, actSpec.numArraysForNewBuffer);
EXPECT_EQUAL(expSpec.allocGrowFactor, actSpec.allocGrowFactor);
}
};
AllocSpec
makeSpec(size_t minArraysInBuffer,
size_t maxArraysInBuffer,
size_t numArraysForNewBuffer)
{
return AllocSpec(minArraysInBuffer, maxArraysInBuffer, numArraysForNewBuffer, ALLOC_GROW_FACTOR);
}
constexpr size_t KB = 1024;
constexpr size_t MB = KB * KB;
TEST_F("require that default allocation spec is given for all array sizes", Fixture(3, makeSpec(4, 32, 8)))
{
EXPECT_EQUAL(3u, f.cfg.maxSmallArraySize());
TEST_DO(f.assertSpec(0, makeSpec(4, 32, 8)));
TEST_DO(f.assertSpec(1, makeSpec(4, 32, 8)));
TEST_DO(f.assertSpec(2, makeSpec(4, 32, 8)));
TEST_DO(f.assertSpec(3, makeSpec(4, 32, 8)));
}
TEST_F("require that we can generate config optimized for a given huge page", Fixture(1024,
2 * MB,
4 * KB,
8 * KB))
{
EXPECT_EQUAL(1024u, f.cfg.maxSmallArraySize());
TEST_DO(f.assertSpec(0, 8 * KB)); // large arrays
TEST_DO(f.assertSpec(1, 256 * KB));
TEST_DO(f.assertSpec(2, 256 * KB));
TEST_DO(f.assertSpec(3, 168 * KB));
TEST_DO(f.assertSpec(4, 128 * KB));
TEST_DO(f.assertSpec(5, 100 * KB));
TEST_DO(f.assertSpec(6, 84 * KB));
TEST_DO(f.assertSpec(32, 16 * KB));
TEST_DO(f.assertSpec(33, 12 * KB));
TEST_DO(f.assertSpec(42, 12 * KB));
TEST_DO(f.assertSpec(43, 8 * KB));
TEST_DO(f.assertSpec(1022, 8 * KB));
TEST_DO(f.assertSpec(1023, 8 * KB));
}
TEST_MAIN() { TEST_RUN_ALL(); }
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