[postgis-users] lwgeom wkb output slower in 1.0 RC1

Ralph Mason ralph.mason at telogis.com
Tue Jan 18 01:09:23 PST 2005


I need to dig this out.

I did a bunch of mods around this that 'deparse' a lwgeom directly to a 
wkb (and I don't know the current state of the code, but removed the 
preparse that was happening before it was feed to the lwgeom parser and 
deparser)

I will have a hunt.

Ralph

>On Mon, Jan 17, 2005 at 08:22:10PM +0100, Aleksander Bandelj wrote:
>  
>
>>WKB output in 1.0 RC1 is several times slower than in 0.9. Problem seems 
>>to be the function WKBFromLWGEOM (used in AsBinary), which first 
>>serializes lwgeom to hex string and then parses the string instead of 
>>writing out WKB directly. Are there any plans to optimize this for 1.0.0 
>>release ?
>>    
>>
>
>That's a known problem. Note that also slowing down are a couple
>of calls to make it OGC *strict* (force 2d and drop SRID).
>I think we should speed them up before 1.0.0
>
>--strk;
>
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