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Adjust parameter for spinning disk

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Based on the default document storage of arangodb
This commit is contained in:
Andrea Cavalli 2022-04-13 19:44:44 +02:00
parent 632d575a47
commit e038b41d17
1 changed files with 2 additions and 2 deletions
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src/main/java/it/cavallium/dbengine/database/disk/LLLocalKeyValueDatabase.java
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@ -185,7 +185,7 @@ public class LLLocalKeyValueDatabase implements LLKeyValueDatabase {
// https://www.arangodb.com/docs/stable/programs-arangod-rocksdb.html
// https://nightlies.apache.org/flink/flink-docs-release-1.3/api/java/org/apache/flink/contrib/streaming/state/PredefinedOptions.html
columnFamilyOptions.setMaxBytesForLevelBase((databaseOptions.spinning() ? 1024 : 256) * SizeUnit.MB);
columnFamilyOptions.setMaxBytesForLevelBase(256 * SizeUnit.MB);
// https://www.arangodb.com/docs/stable/programs-arangod-rocksdb.html
columnFamilyOptions.setMaxBytesForLevelMultiplier(10);
// This option is not supported with multiple db paths
@ -299,7 +299,7 @@ public class LLLocalKeyValueDatabase implements LLKeyValueDatabase {
// // but it will also cause old data to be unable to be cleaned up in time, thus increasing read amplification.
// // This parameter is not easy to adjust. It is generally not recommended to set it above 256MB.
// https://nightlies.apache.org/flink/flink-docs-release-1.3/api/java/org/apache/flink/contrib/streaming/state/PredefinedOptions.html
columnFamilyOptions.setTargetFileSizeBase((databaseOptions.spinning() ? 256 : 64) * SizeUnit.MB);
columnFamilyOptions.setTargetFileSizeBase(64 * SizeUnit.MB);
// // For each level up, the threshold is multiplied by the factor target_file_size_multiplier
// // (but the default value is 1, which means that the maximum sstable of each level is the same).
columnFamilyOptions.setTargetFileSizeMultiplier(1);