On Thu, Sep 15, 2011 at 1:51 PM, Devrim Baris Acar <[email protected]>wrote:
> Hi,
> The following methods issue the same request to my geoserver instance
> (2.0.2).
> They request imagery in geotiff32 format which is a custom format I have
> "invented" to carry coverage data over wms. There is a custom bean on
> geoserver which I have base on worldwind map producer samples(written by the
> talented what_nick).
>
> However the problem is while the first method completes in 2-4 seconds the
> second completes 20+ seconds at best.
>
> In my debugging the streaming part in second method seems to be the problem
> rather than any Imagery related performance issue.
>
So you wrote your own output format, and that's the only difference between
the 2 seconds request and the 20 seconds one?
I guess you already know where to look then :-)
Mind, the geotiff format uses native libraries if you have native JAI
extensions installed, that makes it quite
a bit faster.
Besides that, I would not know, never investigated the performance of the
worldwind map output format
on which your format seems to be based on, but anyways, the difference has
to be found somewhere
in the output format code.
I'd suggest you run it stand alone, from a "main", and make it go through a
profiler to see where the
time is spent,.
Cheers
Andrea
--
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Ing. Andrea Aime
GeoSolutions S.A.S.
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