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| author | Mark Pulford <mark@kyne.com.au> | 2011-05-29 17:49:47 +0400 |
|---|---|---|
| committer | Mark Pulford <mark@kyne.com.au> | 2011-05-29 17:49:47 +0400 |
| commit | 9ff9c8e34355dd3ef211af24edfba85e5b9b29af (patch) | |
| tree | d7803a3dcf4130d6a9581fbdbf3c00f284c0abda | |
| parent | 7e95a594465453f77b7c9449a3a486771e174111 (diff) | |
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 @@ -Performance comparison ----------------------- +JSON Performance Comparison under Lua +------------------------------------- -Here is a rough performance comparision of several JSON packages -available for Lua: +The following JSON packages for Lua were tested: - DKJSON 1.0: One of the fastest pure Lua JSON implementations. - LuaJSON 1.0: A mixed Lua/C JSON implementation using LPeg. -- CSJON 1.0: Pure C. +- Lua YAJL 2.0: A Lua wrapper for the YAJL JSON library. +- CSJON 1.0.2: Pure C. + +LuaJSON 1.2.2 appeared to be slower during initial testing, so 1.0 was +used instead. + +The following Lua implementations were used for this comparison: +- Lua 5.1.4 +- LuaJIT 2.0.0-beta7 The example JSON files used were taken from http://json.org/ and RFC 4627. - === DKJSON === == LuaJSON === === CJSON ==== -== Decoding == Lua LuaJIT Lua LuaJIT Lua LuaJIT -example1.json 1.0x 1.9x 3.4x 3.9x 12.3x 13.7x -example2.json 1.0x 2.0x 3.6x 4.6x 12.2x 20.0x -example3.json 1.0x 2.0x 3.9x 4.7x 13.1x 18.8x -example4.json 1.0x 1.8x 3.7x 4.4x 11.9x 17.0x -example5.json 1.0x 1.5x 4.0x 4.8x 14.6x 22.2x -rfc-example1.json 1.0x 1.5x 3.2x 4.3x 11.7x 16.9x -rfc-example2.json 1.0x 1.5x 3.7x 4.5x 10.3x 19.4x -== Average ==> 1.0x 1.7x 3.5x 4.2x 11.3x 16.5x - -== Encoding == -example1.json 1.0x 1.8x 0.6x 1.4x 23.5x 23.4x -example2.json 1.0x 2.0x 0.5x 1.2x 22.4x 22.4x -example3.json 1.0x 1.8x 0.6x 1.3x 10.8x 13.4x -example4.json 1.0x 1.2x 0.7x 1.5x 15.7x 17.2x -example5.json 1.0x 1.5x 0.6x 1.4x 22.1x 20.4x -rfc-example1.json 1.0x 1.4x 0.5x 1.1x 8.9x 9.2x -rfc-example2.json 1.0x 1.4x 0.6x 1.3x 10.4x 10.9x -== Average ==> 1.0x 1.6x 0.6x 1.3x 17.0x 17.2x - - -CJSON spends a significant amount of time calling sprintf() to convert -doubles to strings while encoding "rfc-example1.json". Hence it only -shows a 9x improvement in this case. - -The performance gains available can vary widely. If performance is -critical, I would recommend testing in a relevant environment with -your intended data. + DKJSON 1.0 LuaJSON 1.0 LuaYAJL 2.0 CJSON 1.0.2 +== Decoding == Lua LuaJIT Lua LuaJIT Lua LuaJIT Lua LuaJIT +example1 1.0x 2.0x 3.4x 4.0x 7.1x 10.1x 13.2x 19.4x +example2 1.0x 2.1x 3.5x 4.5x 6.6x 9.8x 12.7x 20.0x +example3 1.0x 2.0x 3.9x 4.7x 7.0x 9.4x 13.2x 19.3x +example4 1.0x 1.9x 3.7x 4.4x 7.4x 10.6x 11.8x 18.0x +example5 1.0x 2.1x 4.0x 4.7x 7.7x 11.4x 14.7x 22.3x +numbers 1.0x 2.1x 2.1x 3.4x 4.6x 5.7x 8.6x 10.4x +rfc-example1 1.0x 2.0x 3.2x 4.2x 5.8x 8.2x 11.8x 17.7x +rfc-example2 1.0x 2.0x 3.6x 4.5x 7.0x 9.3x 14.5x 20.5x +types 1.0x 2.1x 2.3x 3.5x 4.9x 7.6x 10.7x 17.2x +== Average ==> 1.0x 2.0x 3.3x 4.2x 6.4x 9.1x 12.4x 18.3x + +== Encoding == +example1 1.0x 1.9x 0.6x 1.4x 3.5x 5.6x 23.1x 29.1x +example2 1.0x 2.0x 0.5x 1.2x 3.0x 4.9x 23.4x 28.5x +example3 1.0x 1.8x 0.6x 1.3x 3.0x 4.7x 13.3x 14.9x +example4 1.0x 1.7x 0.7x 1.5x 4.2x 6.6x 15.4x 18.5x +example5 1.0x 2.0x 0.6x 1.4x 3.4x 5.5x 22.7x 25.5x +numbers 1.0x 2.4x 0.4x 0.9x 1.4x 2.1x 4.3x 4.6x +rfc-example1 1.0x 1.9x 0.5x 1.2x 2.3x 3.6x 8.8x 9.6x +rfc-example2 1.0x 1.9x 0.6x 1.3x 2.8x 4.3x 10.7x 10.7x +types 1.0x 2.4x 0.3x 0.7x 1.4x 2.3x 11.7x 11.3x +== Average ==> 1.0x 2.0x 0.6x 1.2x 2.8x 4.4x 14.8x 17.0x + + +Number conversion is a relatively expensive operation. Number heavy +JSON will show less performance difference between libraries. + +Performance can vary widely between platforms and data sets. These +results should only be considered as a rough guide. |