[mapserver-users] WMS Server Optimization?

Thu Apr 3 00:04:48 PDT 2014

Hi,

thats an interesting case. Like Jukka said, could you check your Apache
log files and identify the request URL send by AutoCad?

I would run these request by hand and check the resulting image. For
comparison it would be interesting to do this also with a request from
GrobalMapper or other clients who run normally.

MapServer itself can also write timing information to the log file.
Enable debugging by adding "DEBUG 3" at map level (see docs for more
settings). Than you will see how much time each layer as well as the
whole map needed to complete. Maybe these information can help.

Best wishes,

Lars

On 02.04.2014 23:28, gom wrote:
> Thanks for the tip Andrea. 
> 
> I tried the settings but it makes no difference.  
> 
> I have included my map file to be sure I am am asking the question clearly
> and to be sure I am implelemnting you suggestion correctly.
> 
> 
> MAP
> 	NAME "RasterSample"
> 	SIZE 300 450
> 	EXTENT 496500.000 6234300.00 597000.000 6401200.000
> 	SHAPEPATH "D:/mapserv/shapes"	
> 	CONFIG "PROJ_LIB" "D:/proj/SHARE/"
> 	
> 	WEB
>        	IMAGEPATH "D:\tmp"
> 		METADATA
> 			"wms_title"           "WMS Demo Server"
> 			"wms_onlineresource" 
> "http://myserver:8080/cgi-bin/mapserv.exe?map=d:/mapserv/images/images.map&"
> 			"wms_srs"             "EPSG:26910"
> 			"wms_enable_request"  "GetMap GetCapabilities"
> 		END
> 	END
> 	
> 	PROJECTION
> 		"init=epsg:26910"
> 	END
> 
> 	OUTPUTFORMAT
> 		NAME "png8"
> 		DRIVER AGG/PNG8
> 		MIMETYPE "image/png; mode=8bit"
> 		IMAGEMODE RGB
> 		EXTENSION "png"
> 		FORMATOPTION "QUANTIZE_FORCE=on"
> 		FORMATOPTION "QUANTIZE_COLORS=256"
> 	END
> 
> 	LAYER
>     	NAME "2013-12-23_5m"
> 		EXTENT 496500.000 6234300.00 597000.000 6401200.000
> 		METADATA
> 			"wms_title"    "2013-12-23_5m"
> 			"wms_extent" "496500.000 6234300.00 597000.000 6401200.000"
> 		END
>     	TYPE RASTER
>     	STATUS OFF
>     	TILEINDEX "2013-12-23_be_5m.shp"
> 		TILEITEM "LOCATION"
> 		PROJECTION
> 			"init=epsg:26910"
> 		END
> 		MINGEOWIDTH 8000.01
> 		MAXGEOWIDTH 25000
> 	END
> 	
> 	LAYER
>     	NAME "2013-12-23"
> 		EXTENT 496500.000 6234300.00 597000.000 6401200.000
> 		METADATA
> 			"wms_title"    "2013-12-23"
> 			"wms_extent" "496500.000 6234300.00 597000.000 6401200.000"
> 		END
>     	TYPE RASTER
>     	STATUS OFF
>     	TILEINDEX "2013-12-23_be.shp"
> 		TILEITEM "LOCATION"
> 		PROJECTION
> 			"init=epsg:26910"
> 		END		
> 		MAXGEOWIDTH 8000
> 	END	
> END
> Andrea Peri wrote
>> I set always the EXTEND information at the layer level.
>>
>> This speed really the startup of mapserver.
>> Without the EXTENT al layer level the WMS try to calculate it to respond
>> at
>> a
>> GetCapability request.
>>
>> I guess the wms_extents is not sufficient to speed up mapserver.
>>
>> hope to help.
>>
>> Andrea.
>>
>>
>>
>> 2014-04-02 21:55 GMT+02:00 gom <
> 
>> gord.mckenzie@
> 
>> >:
>>
>>> I have created a Mapserver site and published a couple of large raster
>>> layers
>>> through WMS.  They work as expected and perform quiite well.
>>>
>>> When i add the wms layers to Gaia or to Global Mapper they add and
>>> display
>>> great.  I want to display the layers in AutoCAD Map.  When I add the WMS
>>> layer there it takes 1.5 to 3 minutes to add the layer.  After that it
>>> works
>>> fine.  No other WMS layers behave like that in AutoCAD Map and as I
>>> mentioned previously, the layers don't work like that in any other
>>> program.
>>>
>>> The layers are made up of about 1600 PNG images that are referenced in
>>> the
>>> .map file by tileindexes.  One layer is at 2 metre pixels and the other
>>> at
>>> 5
>>> metre pixels.  If I remove the layer that references the 2 metre images
>>> and
>>> only use the 5 metre images, the layer is attached quite quickly.  If I
>>> switch and use only the 2 metre image layer the speed is slow again.
>>>
>>> My output format is PNG8.
>>> The images are stored in the same projection as they are being queried.
>>> I have added the wms_extents metadata to each layer.
>>> The MAXGEOWIDTH is such that no data is queried on inital loading of the
>>> layer.
>>>
>>> I have asked the question in the AutoCAD support forums, from the AutoCAD
>>> MAp perspective, but was hoping there might be some suggestions as to
>>> configuration/map options, in Mapserver, that might help speed up this
>>> operation.
>>>
>>> Thanks
>>>
>>>
>>>
>>> --
>>> View this message in context:
>>> http://osgeo-org.1560.x6.nabble.com/WMS-Server-Optimization-tp5132723.html
>>> Sent from the Mapserver - User mailing list archive at Nabble.com.
>>> _______________________________________________
>>> mapserver-users mailing list
>>>
> 
>> mapserver-users at .osgeo
> 
>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>>
>>
>>
>>
>> -- 
>> -----------------
>> Andrea Peri
>> . . . . . . . . .
>> qwerty àèìòù
>> -----------------
>>
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> 
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> 
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> 
> 
> 
> 
> 
> --
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