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cd086c16dd
The alias is misleading because automatic selection can also return `HIGH_DEFAULT_DBCACHE`.
42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
// Copyright (c) The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or https://opensource.org/license/mit.
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#include <kernel/caches.h>
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#include <node/caches.h>
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#include <util/byte_units.h>
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#include <boost/test/unit_test.hpp>
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#include <cstdint>
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using namespace node;
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namespace {
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void CheckDbCacheWarnThreshold(uint64_t threshold, uint64_t total_ram)
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{
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BOOST_CHECK(!ShouldWarnOversizedDbCache(threshold, total_ram));
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BOOST_CHECK( ShouldWarnOversizedDbCache(threshold + 1, total_ram));
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}
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} // namespace
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BOOST_AUTO_TEST_SUITE(caches_tests)
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BOOST_AUTO_TEST_CASE(oversized_dbcache_warning)
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{
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BOOST_CHECK(!ShouldWarnOversizedDbCache(MIN_DBCACHE_BYTES, 1_GiB));
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// Below DBCACHE_WARNING_RESERVED_RAM the existing fixed default dominates.
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CheckDbCacheWarnThreshold(DEFAULT_KERNEL_CACHE, 1_GiB);
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CheckDbCacheWarnThreshold(DEFAULT_KERNEL_CACHE, DBCACHE_WARNING_RESERVED_RAM);
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// Above DBCACHE_WARNING_RESERVED_RAM the warning fires at 75% of the headroom.
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CheckDbCacheWarnThreshold(((3_GiB - DBCACHE_WARNING_RESERVED_RAM) / 4) * 3, 3_GiB);
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for (const auto total_ram : {8_GiB, 16_GiB, 32_GiB}) {
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CheckDbCacheWarnThreshold(((total_ram - DBCACHE_WARNING_RESERVED_RAM) / 4) * 3, total_ram);
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}
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}
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BOOST_AUTO_TEST_SUITE_END()
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