[Geoserver-users] Performance issue - setting up image takes long time

GeoServer GeoServer User
1

Hi

I wonder what Geoserver makes during “setting up image” during GetMap call to WMS-endpoint. See logfile snippet:

INFO | jvm 1 | 2015/03/31 14:09:58 | 31 mar 14:09:58 DEBUG [org.geoserver.wms.map] - setting up 4000x3250 image

INFO | jvm 1 | 2015/03/31 14:10:06 | 31 mar 14:10:06 ERROR [org.geotools.map] - Call MapContent dispose() to prevent memory leaks

INFO | jvm 1 | 2015/03/31 14:10:09 | 31 mar 14:10:09 INFO [org.geoserver.wms] –

It always takes long time (5-10 seconds) to do this when requesting large image sizes. I’ve tried to manipulate the java memory heap, but it don’t seem to have any effect on the performance.

Do anyone have any ideas?

Regards

Anders Erlandsson

Sundsvalls kommun

Sweden

2

On Tue, Mar 31, 2015 at 2:18 PM, Erlandsson Anders <
anders.erlandsson@anonymised.com> wrote:

Hi

I wonder what Geoserver makes during “setting up image” during GetMap call
to WMS-endpoint. See logfile snippet:

INFO | jvm 1 | 2015/03/31 14:09:58 | 31 mar 14:09:58 DEBUG
[org.geoserver.wms.map] - setting up 4000x3250 image

INFO | jvm 1 | 2015/03/31 14:10:06 | 31 mar 14:10:06 ERROR
[org.geotools.map] - Call MapContent dispose() to prevent memory leaks

INFO | jvm 1 | 2015/03/31 14:10:09 | 31 mar 14:10:09 INFO
[org.geoserver.wms] –

Ah, the time you have between those two log lines is:
* setting up the image
* read the data
* paint the image
* encode the result in png

So... it's everything, not just allocation of the image, which is actually
just a split second.

In a image such large png encoding is likely going to dominate the overall
request time (just guessing here, you did not say which image
format you're using).

Cheers
Andrea

--

GeoServer Professional Services from the experts! Visit
http://goo.gl/NWWaa2 for more information.

Ing. Andrea Aime
@geowolf
Technical Lead

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

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3

Thanks for the answer!

Yes, its PNG

It’s a cascaded WMS consuming a PNG image itself. The GetMap request to the underlying WMS is logged at the next step.

Med vänlig hälsning

Anders Erlandsson

Systemförvaltare

Mobil: 073-398 03 70

···

On Tue, Mar 31, 2015 at 2:18 PM, Erlandsson Anders <anders.erlandsson@…4010…> wrote:

Hi

I wonder what Geoserver makes during “setting up image” during GetMap call to WMS-endpoint. See logfile snippet:

INFO | jvm 1 | 2015/03/31 14:09:58 | 31 mar 14:09:58 DEBUG [org.geoserver.wms.map] - setting up 4000x3250 image

INFO | jvm 1 | 2015/03/31 14:10:06 | 31 mar 14:10:06 ERROR [org.geotools.map] - Call MapContent dispose() to prevent memory leaks

INFO | jvm 1 | 2015/03/31 14:10:09 | 31 mar 14:10:09 INFO [org.geoserver.wms] –

Ah, the time you have between those two log lines is:

  • setting up the image

  • read the data

  • paint the image

  • encode the result in png

So… it’s everything, not just allocation of the image, which is actually just a split second.

In a image such large png encoding is likely going to dominate the overall request time (just guessing here, you did not say which image

format you’re using).

Cheers

Andrea

–

==

GeoServer Professional Services from the experts! Visit

http://goo.gl/NWWaa2 for more information.

==

Ing. Andrea Aime

@geowolf

Technical Lead

GeoSolutions S.A.S.

Via Poggio alle Viti 1187

55054 Massarosa (LU)

Italy

phone: +39 0584 962313

fax: +39 0584 1660272

mob: +39 339 8844549

http://www.geo-solutions.it

http://twitter.com/geosolutions_it

AVVERTENZE AI SENSI DEL D.Lgs. 196/2003

Le informazioni contenute in questo messaggio di posta elettronica e/o nel/i file/s allegato/i sono da considerarsi strettamente riservate. Il loro utilizzo è consentito esclusivamente al destinatario del messaggio, per le finalità indicate nel messaggio stesso. Qualora riceviate questo messaggio senza esserne il destinatario, Vi preghiamo cortesemente di darcene notizia via e-mail e di procedere alla distruzione del messaggio stesso, cancellandolo dal Vostro sistema. Conservare il messaggio stesso, divulgarlo anche in parte, distribuirlo ad altri soggetti, copiarlo, od utilizzarlo per finalità diverse, costituisce comportamento contrario ai principi dettati dal D.Lgs. 196/2003.

The information in this message and/or attachments, is intended solely for the attention and use of the named addressee(s) and may be confidential or proprietary in nature or covered by the provisions of privacy act (Legislative Decree June, 30 2003, no.196 - Italy’s New Data Protection Code).Any use not in accord with its purpose, any disclosure, reproduction, copying, distribution, or either dissemination, either whole or partial, is strictly forbidden except previous formal approval of the named addressee(s). If you are not the intended recipient, please contact immediately the sender by telephone, fax or e-mail and delete the information in this message that has been received in error. The sender does not give any warranty or accept liability as the content, accuracy or completeness of sent messages and accepts no responsibility for changes made after they were sent or for other risks which arise as a result of e-mail transmission, viruses, etc.