Re: [Simple-support] any performance tricks?

[<Nia...@ub...>]

Hi,

The first time you serialize or deserialize an object will be much
slower that subsequent times. The best thing to do is write the object
once, then start your timer and write it again. You will find the second
time is much faster than the first.

There is also a planned performance improvement for serialization, where
I intend to reduce the impact of namespaces, which have added about 20%
more overhead than needed. With regard to protobuf I am not familiar
with it. However you will find Simple as fast as JAXB or Xstream.

Niall

-----Original Message-----
From: Jim Sermersheim [mailto:ji...@fu...] 
Sent: 02 March 2009 19:07
To: sim...@li...
Subject: [Simple-support] any performance tricks?

Hi,

I'm evaluating Simple along with some other tools that will serialize
data for purposes of data transfer across a network. I much prefer the
annotations-based way that Simple lets me prepare data for serialization
to the other tool I'm evaluating (Google protobuf), but the performance
is becoming a determining factor. For example, a sample data structure
which takes 1.53ms to encode with Simple only takes 0.048ms to encode
with protobuf.

I'm just doing a very simple standard annotation markup with @Attribute
and @Element (the outer structure has a dozen fields and a list of two
inner structures, each having about a half-dozen fields). Then I just
use persister.write to serialize.

I'm guessing maybe the reflection is taking a lot of time?  Not sure. 
But are there any known performance tips/tricks to know about with
Simple?

Thanks,

Jim



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