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Benchmarking standard Scala Json parser, Jackson parser and lift-json parser

Benchmark measures how long it takes to parse 50 000 times the first JSON document from http://www.json.org/example.html.

Facts:

  • Ubuntu 8.10
  • Lenovo T60p
  • Scala 2.7.4
  • java version "1.6.0_10" Java(TM) SE Runtime Environment (build 1.6.0_10-b33) Java HotSpot(TM) Server VM (build 11.0-b15, mixed mode)
  • Exec: scala Jsonbench

Parsing 50 000 json documents:

Scala std	  167127 ms
Jackson       370 ms
lift-json	  465 ms

Summary:

  • Jackson was fastest.
  • lift-json was about 350 times faster than standard Scala parser.

Serialization benchmark, Java serialization and lift-json

See Serbench.scala

Facts:

  • Ubuntu 8.10
  • Lenovo T60p
  • Scala 2.7.4
  • java version "1.6.0_10" Java(TM) SE Runtime Environment (build 1.6.0_10-b33) Java HotSpot(TM) Server VM (build 11.0-b15, mixed mode)
  • Exec: scala Serbench

Serializing 20 000 instances (No type hints):

Java serialization (full)     1889 ms
lift-json (full)              1542 ms
Java serialization (ser)       373 ms
lift-json (ser)                833 ms
Java serialization (deser)    1396 ms
lift-json (deser)	           615 ms

Serializing 20 000 instances (Using type hints, both short and full gives similar results):

Java serialization (full)     1912 ms
lift-json (full)              2268 ms

Summary:

  • Total time about same (serialization + deserialization).
  • Java serializes faster.
  • lift-json deserializes faster.
  • Using type hints comes with a performance penalty.