[Building Sakai] Any Comments on org.codehaus.jackson ??

[Aaron Zeckoski]

Zach,
This is very helpful. Thanks for doing this.

Those are the numbers for processing 3250 items right?

Did you have a chance to monitor memory usage during the tests? I don't
have a great solution for that but I am curious if the memory profiles are
different or generally consistent.

Also, do you think it would be worth testing another typical Sakai case
where the objects being serialized are actually a series of maps with
strings, numbers and the like in them? I would be curious to see how that
varies from the POJO test (if it all, ideally it would not vary).

Final question, any JVM settings or just OOTB Java 6?

-AZ



On Thu, Jun 20, 2013 at 2:08 PM, Zach A. Thomas <zach.thomas at gmail.com>wrote:

> On Jun 19, 2013, at 6:27 PM, Steve Swinsburg <steve.swinsburg at gmail.com>
> wrote:
>
> Here's another perf comparison
>
>
> http://blog.novoj.net/2012/02/05/json-java-parsers-generators-microbenchmark/
>
> Sent from my iPhone
>
>
> I forked his benchmark[1], updated all the libraries to their current
> versions, and modified it so it would work with reflectutils.
>
> Here's what I came up with. The numbers are time (in milliseconds) spent
> chewing through roughly 170Mb of JSON. In case the rich text tables don't
> convey, I also have an image: http://cl.ly/Pm1A
>
> Serializing
>   *Jackson*
>  685
>   *Protostuff*
>  917
>   *FastJson*
>  952
>   *Gson*
>  1881
>   *JsonMarshaller*
>  2050
>   *JsonSmart*
>  2240
>   *Staxon-Jackson*
>  2680
>   *FlexJson*
>  3798
>   *Staxon-JsonStream*
>  4123
>   *reflectutils*
>  4321
>   *JsonLib*
>  7421
>   *XStream*
>  43211
>
> Deserializing
>   *FastJson*
>  459
>   *Protostuff*
>  886
>   *Jackson*
>  888
>   *Gson*
>  2170
>   *reflectutils*
>  2708
>   *JsonMarshaller*
>  4047
>   *FlexJson*
>  4462
>   *Staxon-Jackson*
>  8428
>   *Staxon-JsonStream*
>  10817
>   *XStream*
>  22109
>   *JsonLib*
>  71124
>   *JsonSmart*
>  error
>
> Jackson is impressive, but not dominating. The results make me very
> curious about Protostuff, which I had never heard of before:
> https://code.google.com/p/protostuff/
>
> Zach
>
> [1] https://github.com/zathomas/JavaJsonPerformanceTest
>
>
>


-- 
Aaron Zeckoski - Software Architect - http://tinyurl.com/azprofile
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