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Left side is MongoDB option name; -> right side is equivalent WiredTiger configuration option.
Options for --wiredTigerEngineConfig
cacheSizeMB: number -> cache_size=number MB
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checkpointPeriodSecs: number -> checkpoint=(wait=number)
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checkpointSizeBytes: number -> checkpoint=(log_size=number)
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statisticsLogPeriodSecs: number -> statistics_log=(wait=number)
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Options for --wiredTigerCollectionConfig, --wiredTigerIndexConfig
compression: compressor -> block_compressor=compressor, compressor=\{snappy, zlib, none\}
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maxLeafPageSizeKB: number -> leaf_page_max=number KB
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overflowSizeBytes: number -> leaf_item_max=number
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maxPageMemorySizeKB: number -> memory_page_max=number
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prefixCompression: boolean -> prefix_compression=boolean (default on for indexes)
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These options will be validated regardless of the current storage engine; this is to make mixed storage-engine replica sets work.
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