off the top of my head, my rule of thumb is to check the amount of RAM required to<br>render your largest layer which requires all the of the layer, ie at the full extents of your <br>map. Ideally having twice the RAM available required for that will help.<br>
<br>SDF is also more efficient that a DB layer (ie king oracle) in this case, In my testing<br>the same data in SDF will be processed and rendered faster which means the memory <br>requirements are less for SDF because it turns around the request faster.<br>
<br>ie rendering a 128MB layer from SDF might take 1s and use say 128MB of RAM, the same layer from oracle might also use 128MB of RAM but take 2s.<br><br>So with 256MB of free RAM, you can serve say 2 requests with SDF per second but only 1 Oracle layer without paging.<br>
<br>This issue <a href="http://trac.osgeo.org/mapguide/ticket/272">http://trac.osgeo.org/mapguide/ticket/272</a> relating to Mapguide doing a select * from table (instead of just the required columns) also dramatically affects memory usage depending on your tables.<br>
<br>saying all of that, when i have run up a VMWARE of XP with MGOS on my laptop it was a lot slower than running natively, but it was a laptop!<br><br>z<br><br><div class="gmail_quote">On Feb 7, 2008 10:52 AM, Martin Fafard <<a href="mailto:martin.fafard@geoprojection.com">martin.fafard@geoprojection.com</a>> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">It's a little bit slower for me.<br><br>Martin F<br><br>James Card a écrit :<br><div class="Ih2E3d">
> We have a client asking about performance of the MapGuide server on<br>> VMware, compared to running the server on the bare machine. I know<br>> some of the folks here are running the MapGuide server in VMware<br>
> environments -- have any of you made any comparison tests? Is more RAM<br>> required? Does speed degrade noticeably?<br>><br></div><div><div></div><div class="Wj3C7c">_______________________________________________<br>
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