diff options
| author | Mark Pulford <mark@kyne.com.au> | 2011-05-29 23:19:47 +0930 |
|---|---|---|
| committer | Mark Pulford <mark@kyne.com.au> | 2011-05-29 23:19:47 +0930 |
| commit | 9ff9c8e34355dd3ef211af24edfba85e5b9b29af (patch) | |
| tree | d7803a3dcf4130d6a9581fbdbf3c00f284c0abda | |
| parent | 7e95a594465453f77b7c9449a3a486771e174111 (diff) | |
| download | lua-cjson-9ff9c8e34355dd3ef211af24edfba85e5b9b29af.tar.gz lua-cjson-9ff9c8e34355dd3ef211af24edfba85e5b9b29af.tar.bz2 lua-cjson-9ff9c8e34355dd3ef211af24edfba85e5b9b29af.zip | |
Update performance.txt for 1.0.2
| -rw-r--r-- | performance.txt | 77 |
1 files changed, 43 insertions, 34 deletions
diff --git a/performance.txt b/performance.txt index 788eb9e..51c61ec 100644 --- a/performance.txt +++ b/performance.txt | |||
| @@ -1,42 +1,51 @@ | |||
| 1 | Performance comparison | 1 | JSON Performance Comparison under Lua |
| 2 | ---------------------- | 2 | ------------------------------------- |
| 3 | 3 | ||
| 4 | Here is a rough performance comparision of several JSON packages | 4 | The following JSON packages for Lua were tested: |
| 5 | available for Lua: | ||
| 6 | 5 | ||
| 7 | - DKJSON 1.0: One of the fastest pure Lua JSON implementations. | 6 | - DKJSON 1.0: One of the fastest pure Lua JSON implementations. |
| 8 | - LuaJSON 1.0: A mixed Lua/C JSON implementation using LPeg. | 7 | - LuaJSON 1.0: A mixed Lua/C JSON implementation using LPeg. |
| 9 | - CSJON 1.0: Pure C. | 8 | - Lua YAJL 2.0: A Lua wrapper for the YAJL JSON library. |
| 9 | - CSJON 1.0.2: Pure C. | ||
| 10 | |||
| 11 | LuaJSON 1.2.2 appeared to be slower during initial testing, so 1.0 was | ||
| 12 | used instead. | ||
| 13 | |||
| 14 | The following Lua implementations were used for this comparison: | ||
| 15 | - Lua 5.1.4 | ||
| 16 | - LuaJIT 2.0.0-beta7 | ||
| 10 | 17 | ||
| 11 | The example JSON files used were taken from http://json.org/ and | 18 | The example JSON files used were taken from http://json.org/ and |
| 12 | RFC 4627. | 19 | RFC 4627. |
| 13 | 20 | ||
| 14 | === DKJSON === == LuaJSON === === CJSON ==== | 21 | DKJSON 1.0 LuaJSON 1.0 LuaYAJL 2.0 CJSON 1.0.2 |
| 15 | == Decoding == Lua LuaJIT Lua LuaJIT Lua LuaJIT | 22 | == Decoding == Lua LuaJIT Lua LuaJIT Lua LuaJIT Lua LuaJIT |
| 16 | example1.json 1.0x 1.9x 3.4x 3.9x 12.3x 13.7x | 23 | example1 1.0x 2.0x 3.4x 4.0x 7.1x 10.1x 13.2x 19.4x |
| 17 | example2.json 1.0x 2.0x 3.6x 4.6x 12.2x 20.0x | 24 | example2 1.0x 2.1x 3.5x 4.5x 6.6x 9.8x 12.7x 20.0x |
| 18 | example3.json 1.0x 2.0x 3.9x 4.7x 13.1x 18.8x | 25 | example3 1.0x 2.0x 3.9x 4.7x 7.0x 9.4x 13.2x 19.3x |
| 19 | example4.json 1.0x 1.8x 3.7x 4.4x 11.9x 17.0x | 26 | example4 1.0x 1.9x 3.7x 4.4x 7.4x 10.6x 11.8x 18.0x |
| 20 | example5.json 1.0x 1.5x 4.0x 4.8x 14.6x 22.2x | 27 | example5 1.0x 2.1x 4.0x 4.7x 7.7x 11.4x 14.7x 22.3x |
| 21 | rfc-example1.json 1.0x 1.5x 3.2x 4.3x 11.7x 16.9x | 28 | numbers 1.0x 2.1x 2.1x 3.4x 4.6x 5.7x 8.6x 10.4x |
| 22 | rfc-example2.json 1.0x 1.5x 3.7x 4.5x 10.3x 19.4x | 29 | rfc-example1 1.0x 2.0x 3.2x 4.2x 5.8x 8.2x 11.8x 17.7x |
| 23 | == Average ==> 1.0x 1.7x 3.5x 4.2x 11.3x 16.5x | 30 | rfc-example2 1.0x 2.0x 3.6x 4.5x 7.0x 9.3x 14.5x 20.5x |
| 24 | 31 | types 1.0x 2.1x 2.3x 3.5x 4.9x 7.6x 10.7x 17.2x | |
| 25 | == Encoding == | 32 | == Average ==> 1.0x 2.0x 3.3x 4.2x 6.4x 9.1x 12.4x 18.3x |
| 26 | example1.json 1.0x 1.8x 0.6x 1.4x 23.5x 23.4x | 33 | |
| 27 | example2.json 1.0x 2.0x 0.5x 1.2x 22.4x 22.4x | 34 | == Encoding == |
| 28 | example3.json 1.0x 1.8x 0.6x 1.3x 10.8x 13.4x | 35 | example1 1.0x 1.9x 0.6x 1.4x 3.5x 5.6x 23.1x 29.1x |
| 29 | example4.json 1.0x 1.2x 0.7x 1.5x 15.7x 17.2x | 36 | example2 1.0x 2.0x 0.5x 1.2x 3.0x 4.9x 23.4x 28.5x |
| 30 | example5.json 1.0x 1.5x 0.6x 1.4x 22.1x 20.4x | 37 | example3 1.0x 1.8x 0.6x 1.3x 3.0x 4.7x 13.3x 14.9x |
| 31 | rfc-example1.json 1.0x 1.4x 0.5x 1.1x 8.9x 9.2x | 38 | example4 1.0x 1.7x 0.7x 1.5x 4.2x 6.6x 15.4x 18.5x |
| 32 | rfc-example2.json 1.0x 1.4x 0.6x 1.3x 10.4x 10.9x | 39 | example5 1.0x 2.0x 0.6x 1.4x 3.4x 5.5x 22.7x 25.5x |
| 33 | == Average ==> 1.0x 1.6x 0.6x 1.3x 17.0x 17.2x | 40 | numbers 1.0x 2.4x 0.4x 0.9x 1.4x 2.1x 4.3x 4.6x |
| 34 | 41 | rfc-example1 1.0x 1.9x 0.5x 1.2x 2.3x 3.6x 8.8x 9.6x | |
| 35 | 42 | rfc-example2 1.0x 1.9x 0.6x 1.3x 2.8x 4.3x 10.7x 10.7x | |
| 36 | CJSON spends a significant amount of time calling sprintf() to convert | 43 | types 1.0x 2.4x 0.3x 0.7x 1.4x 2.3x 11.7x 11.3x |
| 37 | doubles to strings while encoding "rfc-example1.json". Hence it only | 44 | == Average ==> 1.0x 2.0x 0.6x 1.2x 2.8x 4.4x 14.8x 17.0x |
| 38 | shows a 9x improvement in this case. | 45 | |
| 39 | 46 | ||
| 40 | The performance gains available can vary widely. If performance is | 47 | Number conversion is a relatively expensive operation. Number heavy |
| 41 | critical, I would recommend testing in a relevant environment with | 48 | JSON will show less performance difference between libraries. |
| 42 | your intended data. | 49 | |
| 50 | Performance can vary widely between platforms and data sets. These | ||
| 51 | results should only be considered as a rough guide. | ||