benchmarking-variants

Parquet Performance Flame Graphs

CPU flame graphs from JMH benchmark runs of org.apache.parquet.variant benchmarks.

VariantBuilderBenchmark

All runs: fieldCount=200.

Method	Depth	Flame Graphs
buildVariant	Flat	forward · reverse
buildVariant	Nested	forward · reverse
consumeRecordsShredded	Flat	forward · reverse
consumeRecordsShredded	Nested	forward · reverse
consumeRecordsUnshredded	Flat	forward · reverse
consumeRecordsUnshredded	Nested	forward · reverse
deserializeVariant	Flat	forward · reverse
deserializeVariant	Nested	forward · reverse
readFileShredded	Flat	forward · reverse
readFileShredded	Nested	forward · reverse
readFileUnshredded	Flat	forward · reverse
readFileUnshredded	Nested	forward · reverse
serializeVariant	Flat	forward · reverse
serializeVariant	Nested	forward · reverse
writeToMemoryFile	Flat	forward · reverse
writeToMemoryFile	Nested	forward · reverse
writeToMemoryUnshredded	Flat	forward · reverse
writeToMemoryUnshredded	Nested	forward · reverse

VariantConverterBenchmark

Method	String Length	Flame Graphs
appendBinary	16	forward · reverse
appendBinary	512	forward · reverse
appendBinary	2048	forward · reverse
appendStringAsBinary	16	forward · reverse
appendStringAsBinary	512	forward · reverse
appendStringAsBinary	2048	forward · reverse
appendStringAsString	16	forward · reverse
appendStringAsString	512	forward · reverse
appendStringAsString	2048	forward · reverse

VariantProjectionBenchmark

Method	Table Type	Flame Graphs
readAllRecords	Shredded	forward · reverse
readAllRecords	Unshredded	forward · reverse
readProjectedFileSchema	Shredded	forward · reverse
readProjectedFileSchema	Unshredded	forward · reverse
readProjectedLeanSchema	Shredded	forward · reverse
readProjectedLeanSchema	Unshredded	forward · reverse