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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hey MapserverCommunity,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>at first thanks for your great work. We are using mapserver to publish a big amount of historic raster images (tiff) for different timestamp. Together with a postgis timeindex this works basically great, so thanks again :)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Unfortunately we are now facing some performance issues. Probably due to our big amount of Gtiffs (uncompressed 1,9 TB). To boost performance, we already did some upgrade on the tiff file scale (intern tiling/overviews). But on higher scales I didn't find a good solution yet. Normally I would compute a VRT on higher scales and add some overviews to it. But because of the time dimension of our data, I didn't found an approach to get this working yet. So now I am thinking about different approaches to boost the performance of our WMS-Time layer (at the end over one layer we want to publish 6000 gtiffs scattered on 100 timestamps). It would be nice if some folks of you could give us some advice or simply share some knowledge and experiences about this kind of issue with us.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>One approach over which I was thinking is the using of mapcache. I heard that mapcache ( http://mapserver.org/development/rfc/ms-rfc-96.html) is trying to support the time dimension. But it's not clear for me right know, how to set up the time support? Is it possible to configure a time layer in the mapcache.xml and simply do than a seeding (mapcache_seed) of a wms-time layer? <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Another approach over which I was thinking is the using of a wrapper script. I could preprocess single layers for all 100 timestamps and compute than VRTs and overviews. After that I could simply redirect the GetMap-Request on the basis of the timestamp to the correct layers. But I am not sure if this approach is a smart way and probably I would run in other problems in the future.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Are there any other good approaches?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal>Kind regards,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>JM<o:p></o:p></p></div></body></html>