A few quick questions: - define better what you mean for "GeoServers or GeoWebCaches instances crashes" - which version of GeoServer are we talking about? - I need to know the following about your mosaic of ecw:
-1- number of tiles in the mosaic -2- gdalinfo on a representative tile -3- how you configured the tile -4- version of imageio-ext in use. Ciao, Simone. ------------------------------------------------------- === Notice that our office phone number has recently changed! Please, update your records! === Ing. Simone Giannecchini GeoSolutions S.A.S. Founder Via Poggio alle Viti 1187 55054 Massarosa (LU) Italy phone: +39 0584962313 fax: +39 0584962313 mob: +39 333 8128928 http://www.geo-solutions.it http://geo-solutions.blogspot.com/ http://www.linkedin.com/in/simonegiannecchini http://twitter.com/simogeo ------------------------------------------------------- On Fri, Oct 1, 2010 at 1:41 PM, DGIS Devels <[email protected]> wrote: > Hi! We have tested with six layers: five Oracle DB layers and a ECW > mosaic. GeoWebCache stores tiles in the same machine where Geoserver > instances run. > We generated "data" tiles in PNG (palette safe) and images in JPEG. I'm not > sure about the type of these images. I give you the result of the gdalinfo, > I hope it is useful: > gdalinfo 2400_1338.jpeg > Driver: JPEG/JPEG JFIF > Size is 512, 512 > Coordinate System is `' > Corner Coordinates: > Upper Left ( 0.0, 0.0) > Lower Left ( 0.0, 512.0) > Upper Right ( 512.0, 0.0) > Lower Right ( 512.0, 512.0) > Center ( 256.0, 256.0) > Band 1 Block=512x1 Type=Byte, ColorInterp=Red > Band 2 Block=512x1 Type=Byte, ColorInterp=Green > Band 3 Block=512x1 Type=Byte, ColorInterp=Blue > Thanks > 2010/10/1 <[email protected]> >> >> Some additional questions. >> >> You wrote about tiles, so you are talking about raster/image data ? >> >> Where are your tiles stored. On a shared drive or in a database ? >> >> if you use a database, which one ? >> >> Are your tiles multiband images or images with a color table. If you are >> unsure, send me the output of >> gdalinfo yourtile.png. I achieved a performance boost when switching >> from multiband images to images with a color table. >> >> Cheers >> Christian >> >> >> >> >> Quoting DGIS Devels <[email protected]>: >> >>> Hi, we have a question about Geoserver performance. >>> >>> We have been trying for a couple of months to find a good configuration >>> that >>> offers a solution to our use case. You can see our current architecture >>> in >>> the attachment: >>> - WebLogic cluster with 2 machines and 4 managed servers (2 per machine). >>> We >>> have tested it whit JRockit and Sun JVM. >>> - 4 Geoservers (one per managed server) >>> - 2 GeoWebCaches (one per machine) >>> - A software balancer which balances requests between GeoWebCaches and >>> Geoservers >>> >>> We've testing too with a lot of values c for parameters like memory, >>> render >>> memory, timeouts, DB connections ... >>> >>> Our goal is to support 85 concurrent users performing an average of 5 map >>> requests (near of 100 256x256 tiles) in a time of 10 minutes. It must >>> be >>> equivalent, according to our calculations, to respond to some 85000 >>> requests >>> in those 10 minutes. >>> >>> So far, the max number of request we've been able to response is about >>> 30000 >>> tiles. In most cases, some GeoServers or GeoWebCaches instances crashes. >>> >>> Anybody has made similar tests? Do you think is possible to reach a >>> similar >>> performance? >>> >> >> >> >> ---------------------------------------------------------------- >> This message was sent using IMP, the Internet Messaging Program. >> >> > > > ------------------------------------------------------------------------------ > Start uncovering the many advantages of virtual appliances > and start using them to simplify application deployment and > accelerate your shift to cloud computing. > http://p.sf.net/sfu/novell-sfdev2dev > _______________________________________________ > Geoserver-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/geoserver-users > > ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Geoserver-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
