Re: [Simple-support] any performance tricks?

[Jim S. <ji...@fu...>]

You're right, the first serialization takes hundreds of ms.

I should have mentioned that my test serializes the object a few hundred 
times (just to make sure *everything* is primed -- cache, hotspot, 
etc.), then starts the timer and serializes it 10000 more times and 
calculates an average time per serialization.

protobuf is a different beast in that you build a template and it 
generates your code for you. I prefer the more flexible annotation-based 
method of Simple, but might have to go with the speed of protobuf :(

Nia...@ub... wrote:
> 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
>
>
>
> CONFIDENTIAL
>
> This document and attachments contain information from Fusion-io, Inc.
> which is confidential and/or legally privileged. 
> The information is intended only for the use of the individual or entity
> named on this transmission. 
> If you are not the intended recipient, you are hereby notified that any
> disclosure, copying, distribution or taking of any action in reliance on
> the contents of this emailed information is strictly prohibited, and
> that the documents should be returned to Fusion-io, Inc. immediately. 
> In this regard, if you have received this email in error, please notify
> us by return email immediately.
>
> ------------------------------------------------------------------------
> ------
> Open Source Business Conference (OSBC), March 24-25, 2009, San
> Francisco, CA -OSBC tackles the biggest issue in open source: Open
> Sourcing the Enterprise -Strategies to boost innovation and cut costs
> with open source participation -Receive a $600 discount off the
> registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H
> _______________________________________________
> Simple-support mailing list
> Sim...@li...
> https://lists.sourceforge.net/lists/listinfo/simple-support
> Visit our website at http://www.ubs.com
>
> This message contains confidential information and is intended only 
> for the individual named.  If you are not the named addressee you 
> should not disseminate, distribute or copy this e-mail.  Please 
> notify the sender immediately by e-mail if you have received this 
> e-mail by mistake and delete this e-mail from your system.
> 	
> E-mails are not encrypted and cannot be guaranteed to be secure or 
> error-free as information could be intercepted, corrupted, lost, 
> destroyed, arrive late or incomplete, or contain viruses.  The sender 
> therefore does not accept liability for any errors or omissions in the 
> contents of this message which arise as a result of e-mail transmission.  
> If verification is required please request a hard-copy version.  This 
> message is provided for informational purposes and should not be 
> construed as a solicitation or offer to buy or sell any securities 
> or related financial instruments.
>
> UBS Limited is a company registered in England & Wales under company
> number 2035362, whose registered office is at 1 Finsbury Avenue,
> London, EC2M 2PP, United Kingdom.
>
> UBS AG (London Branch) is registered as a branch of a foreign company
> under number BR004507, whose registered office is at
> 1 Finsbury Avenue, London, EC2M 2PP, United Kingdom.
>
> UBS Clearing and Execution Services Limited is a company registered
> in England & Wales under company number 03123037, whose registered
> office is at 1 Finsbury Avenue, London, EC2M 2PP, United Kingdom.
>   


CONFIDENTIAL

This document and attachments contain information from Fusion-io, Inc. which is confidential and/or legally privileged. 
The information is intended only for the use of the individual or entity named on this transmission. 
If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution or taking of any 
action in reliance on the contents of this emailed information is strictly prohibited, and that the documents should be returned to Fusion-io, Inc. immediately. 
In this regard, if you have received this email in error, please notify us by return email immediately.