Improving Performance... {Scanned}

[Rahkonen Jukka]

Hi Jelmer,
 
I made a quick test with one shapefile of size 580 MB containing 1.2 million polygons. Shptree (from FW Tools 0.9.8) with default parameters took 2 min 30 secs to run with 3 GHz Pentium and Windows XP and memory usage grew not more than 200-300 MB during the process. Of my 1 GB I had all the time more than 500 free. The idle usage seems to be around 200 MB.
 
With quite a similar datasets we have rather different experiences but I do not have any idea why. 
 
Regards,
 
Jukka Rahkonen

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Lähettäjä: UMN MapServer Users List puolesta: Jelmer Baas
Lähetetty: su 19.3.2006 21:09
Vastaanottaja: MAPSERVER-USERS at LISTS.UMN.EDU
Aihe: Re: [UMN_MAPSERVER-USERS] Improving Performance... {Scanned}



Siki Zoltan wrote:
> On Sun, 19 Mar 2006, Jelmer Baas wrote:

> The largest file I had was 44 MB, I created index without any problem.
> Does it work for smaler files?
> Do you use shptree? You may have version problem (dll or so).

Mine is 218MB (Only has 1132271 records :P). Smaller files DID work.
Like I said, it loads all the entries into memory and then crashes when
trying to address more than 2GB.

--
Jelmer