Protobuf Perforamcne

This benchmark result is tested on workstation with processor of Intel® Xeon® Processor E5-2630 and 32GB RAM

This table contains 3 languages' results:

C++ - For C++ there're 3 kinds of parsing ways:
- new - This is for using new operator for creating message instance.
- new arena - This is for using arena for creating new message instance.
- reuse - This is for reusing the same message instance for parsing.
Java - For Java there're 3 kinds of parsing/Serialization ways:
- byte[] - This is for parsing from a Byte Array.
- ByteString - This is for parsing from a com.google.protobuf.ByteString.
- InputStream - This is for parsing from a InputStream
Python - For Pythong there're 3 kinds of python protobuf for testing:
- C++-genereated-code - This is for using cpp generated code of the proto file as dynamic linked library.
- C++-reflection - This is for using cpp reflection, which there's no generated code, but still using cpp protobuf library as dynamic linked library.
- pure-Python - This is for pure Python version, which don't link with any cpp protobuf library.

Parsing performance

	C++			C++ with tcmalloc			java			python
	new	new arena	reuse	new	new arena	reuse	byte[]	ByteString	InputStream	C++-generated-code	C++-reflection	pure-Python
google_message1_proto2	368.717MB/s	261.847MB/s	799.403MB/s	645.183MB/s	441.023MB/s	1.122GB/s	425.437MB/s	425.937MB/s	251.018MB/s	82.8314MB/s	47.6763MB/s	3.76299MB/s
google_message1_proto3	294.517MB/s	229.116MB/s	469.982MB/s	434.510MB/s	394.701MB/s	591.931MB/s	357.597MB/s	378.568MB/s	221.676MB/s	82.0498MB/s	39.9467MB/s	3.77751MB/s
google_message2	277.242MB/s	347.611MB/s	793.67MB/s	503.721MB/s	596.333MB/s	922.533MB/s	416.778MB/s	419.543MB/s	367.145MB/s	241.46MB/s	71.5723MB/s	2.73538MB/s
google_message3_1	213.478MB/s	291.58MB/s	543.398MB/s	539.704MB/s	717.300MB/s	927.333MB/s	684.241MB/s	704.47MB/s	648.624MB/s	209.036MB/s	142.356MB/s	15.3324MB/s
google_message3_2	672.685MB/s	802.767MB/s	1.21505GB/s	985.790MB/s	1.136GB/s	1.367GB/s	1.54439GB/s	1.60603GB/s	1.33443GB/s	573.835MB/s	314.33MB/s	15.0169MB/s
google_message3_3	207.681MB/s	140.591MB/s	535.181MB/s	369.743MB/s	262.301MB/s	556.644MB/s	279.385MB/s	304.853MB/s	107.575MB/s	32.248MB/s	26.1431MB/s	2.63541MB/s
google_message3_4	7.96091GB/s	7.10024GB/s	9.3013GB/s	8.518GB/s	8.171GB/s	9.917GB/s	5.78006GB/s	5.85198GB/s	4.62609GB/s	2.49631GB/s	2.35442GB/s	802.061MB/s
google_message3_5	76.0072MB/s	51.6769MB/s	237.856MB/s	178.495MB/s	111.751MB/s	329.569MB/s	121.038MB/s	132.866MB/s	36.9197MB/s	10.3962MB/s	8.84659MB/s	1.25203MB/s
google_message4	331.46MB/s	404.862MB/s	427.99MB/s	589.887MB/s	720.367MB/s	705.373MB/s	606.228MB/s	589.13MB/s	530.692MB/s	305.543MB/s	174.834MB/s	7.86485MB/s

	C++	C++ with tcmalloc	java			python
	C++	C++ with tcmalloc	byte[]	ByteString	InputStream	C++-generated-code	C++-reflection	pure-Python
google_message1_proto2	1.39698GB/s	1.701GB/s	1.12915GB/s	1.13589GB/s	758.609MB/s	260.911MB/s	58.4815MB/s	5.77824MB/s
google_message1_proto3	959.305MB/s	939.404MB/s	1.15372GB/s	1.07824GB/s	802.337MB/s	239.4MB/s	33.6336MB/s	5.80524MB/s
google_message2	1.27429GB/s	1.402GB/s	1.01039GB/s	1022.99MB/s	798.736MB/s	996.755MB/s	57.9601MB/s	4.09246MB/s
google_message3_1	1.31916GB/s	2.049GB/s	991.496MB/s	860.332MB/s	662.88MB/s	1.48625GB/s	421.287MB/s	18.002MB/s
google_message3_2	2.15676GB/s	2.632GB/s	2.14736GB/s	2.08136GB/s	1.55997GB/s	2.39597GB/s	326.777MB/s	16.0527MB/s
google_message3_3	650.456MB/s	1.040GB/s	593.52MB/s	580.667MB/s	346.839MB/s	123.978MB/s	35.893MB/s	2.32834MB/s
google_message3_4	8.70154GB/s	9.825GB/s	5.88645GB/s	5.93946GB/s	2.44388GB/s	5.9241GB/s	4.05837GB/s	876.87MB/s
google_message3_5	246.33MB/s	443.993MB/s	283.278MB/s	259.167MB/s	206.37MB/s	37.0285MB/s	12.2228MB/s	1.1979MB/s
google_message4	1.56674GB/s	2.19601GB/s	776.907MB/s	770.707MB/s	702.931MB/s	1.49623GB/s	205.116MB/s	8.93428MB/s

* The cpp performance can be improved by using tcmalloc, please follow the (instruction)[https://github.com/google/protobuf/blob/master/benchmarks/README.md] to link with tcmalloc to get the faster result.