Hi,
I'm afraid I cannot repaint each 500 ms or longer...it's a customer's
requirement... :(
Thanks anyway!
2011/5/13 <rratcliff_at_ticom-geo.com>
> You might changing your repaint loop to every 500 ms or longer, 40 ms is
> pretty tight.
>
> Sent via BlackBerry by AT&T
> ------------------------------
> *From: * Ruben DF <rdocasalf_at_gmail.com>
> *Date: *Fri, 13 May 2011 15:17:45 +0200
> *To: *<openmap-users_at_bbn.com>
> *Subject: *[OpenMap Users] Optimizing Performance
>
> Hi all,
>
> First of all, I'm so sorry for my two previous mails. I think I clicked
> accidentally and mails were sent.
>
> Despite having written some improvements to optimize the performance
> (picking them up from several mails from openmap mailing list), my app
> continues having a low performance. I'm gonna write what I did in case
> anyone could help me (I'm using Openmap 4.6):
>
> * I'm using BufferedLayerMapBean instead of using by mapBean by
> default.
> * I'm using a set of layers (some of them are statics, others very
> active layers).
> * The statics layers are taken from openmap.properties and the
> background flag as true.
> * The active layers inherit from OMGraphicHandlerLayer and I'm using
> this code when inits
>
> setProjectionChangePolicy(new
> com.bbn.openmap.layer.policy.StandardPCPolicy(this, true));
> setRenderPolicy(new
> com.bbn.openmap.layer.policy.BufferedImageRenderPolicy());// I added this
> line to improve the performance
>
> * I'm using the omGraphicList by default:
> omlist = layer.prepare();
> omlist.add(elements);
> layer.setList(omlist);
>
> * I have a dedicated thread to paint each 40 ms approx. and I do this:
>
> if(omList1!=null){
> omList1.generate(mapBean.getProjection());
> }
> ......
> ......
> if(omListN!=null){
> omListN.generate(mapBean.getProjection());
> }
>
> mapBean.setBufferDirty(true);
> mapBean.setDoubleBuffered(true);
> Rectangle r = mapBean.getBounds();//Limits of mapBean
> mapBean.repaint(r); //In order to paint just what I'm looking in
> a given moment (i don't know wheather this is o not correct)
> * I have this commmands when execute my app:
>
> -Djava2d.opengl=true
> -Dsun.java2d.pmoffscreen=false
>
> My computer is a Intel Xeon (2 processors at 2Ghz) and RAM 3GB. I'm aware
> of the rate is quite high (25hz) to refresh, but the problem is that the cpu
> usage is practically the same with these improvements I mentioned before
> (about 70% cpu) and I don't know what I can do to solve it. It's clear that
> if the thread sleeps for more milliseconds, the cpu usage decreases, since
> there are less call to repaint(). Perhaps I'm doing something wrong with my
> code.
>
>
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Received on Mon May 23 2011 - 05:33:37 EDT