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Adjust default compaction size

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This commit is contained in:
Andrea Cavalli 2022-04-04 22:55:28 +02:00
parent 1dfe0d5a77
commit 1cd5fc8eed
1 changed files with 6 additions and 4 deletions
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src/main/java/it/cavallium/dbengine/database/disk/LLLocalKeyValueDatabase.java
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@ -2,6 +2,7 @@ package it.cavallium.dbengine.database.disk;
import static io.netty5.buffer.api.StandardAllocationTypes.OFF_HEAP;
import static it.cavallium.dbengine.database.LLUtils.MARKER_ROCKSDB;
import static org.rocksdb.ColumnFamilyOptionsInterface.DEFAULT_COMPACTION_MEMTABLE_MEMORY_BUDGET;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.Tag;
@ -147,10 +148,11 @@ public class LLLocalKeyValueDatabase implements LLKeyValueDatabase {
//noinspection ConstantConditions
if (databaseOptions.memtableMemoryBudgetBytes() != null) {
// 16MiB/256MiB of ram will be used for level style compaction
columnOptions.optimizeLevelStyleCompaction(databaseOptions
.memtableMemoryBudgetBytes()
.orElse(databaseOptions.lowMemory() ? 16L * SizeUnit.MB : 128L * SizeUnit.MB));
// about 512MB of ram will be used for level style compaction
columnOptions.optimizeLevelStyleCompaction(databaseOptions.memtableMemoryBudgetBytes().orElse(
databaseOptions.lowMemory()
? (DEFAULT_COMPACTION_MEMTABLE_MEMORY_BUDGET / 4)
: DEFAULT_COMPACTION_MEMTABLE_MEMORY_BUDGET));
}
// https://www.arangodb.com/docs/stable/programs-arangod-rocksdb.html