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<DIV dir=ltr align=left><SPAN class=921261223-21072007><FONT face=Arial
color=#0000ff size=2>Regarding the slow user experience on consumer level
internet connections: if you change the format for the map requests from PNG to
JPG, the end-user performance increase is profound. Especially in the
case of raster imagery layers in the background - each map request will drop
from about 1 MB to less than 100 KB. Of course, there are cons to this
approach: PNG looks better and if you're using base layer tiles than you
must use PNG for the transparency of the overlying dynamic
layers.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=921261223-21072007><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=921261223-21072007><FONT face=Arial
color=#0000ff size=2>For those wondering, you can change this by editing the
ajaxmappane.temp file. Change the FORMAT=PNG parameter to JPG in the
RequestMapImage() function.</FONT></SPAN></DIV>
<DIV> </DIV><!-- Converted from text/rtf format -->
<P><SPAN lang=en-us><FONT face=Tahoma size=1>Andy Morsell, P.E.</FONT></SPAN>
<BR><SPAN lang=en-us><FONT face=Tahoma size=1>Spatial Integrators,
Inc.</FONT></SPAN> <BR><SPAN lang=en-us><FONT face=Tahoma size=1><A
href="http://www.SpatialGIS.com">http://www.SpatialGIS.com</A></FONT></SPAN>
</P>
<DIV>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> mapguide-users-bounces@lists.osgeo.org
[mailto:mapguide-users-bounces@lists.osgeo.org] <B>On Behalf Of </B>Trevor
Wekel<BR><B>Sent:</B> Friday, July 20, 2007 9:46 AM<BR><B>To:</B> MapGuide Users
Mail List<BR><B>Subject:</B> RE: [mapguide-users] MGOS server harware &
bandwidth<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Hi
Jorge,<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">I
have tried using MGOS over a 1Mbit “home” connection. Personally, I think
it is too slow and the user experience is disappointing. I would suggest
starting at 10Mbit/s. If you are using tiled maps, a single CPU can serve
between 50 and 200 tiles per second. Assuming each tile is 10kbytes, the
burst traffic rates will be between 5Mbit/sec and 20Mbit/sec.
<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Just
as a side note, under “lab” conditions with a quad core Intel Core 2 box I have
been able to saturate a 100Mbit/s Ethernet line using pre-generated tiles.
<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">MapGuide
interactivity is quite dependant on burst rates. From what I have heard,
“unmetered” bandwidth plans are often oversubscribed. Even you have a
10Mbit plan, you may never be able to obtain that rate if there are a 100 other
sites sharing the same pipe. If you are looking to host somewhere, ask
your ISP what you can realistically expect as a burst rate.
<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">
<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Thanks,<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Trevor<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none">
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'"> Jorge Rubio
[mailto:j.e.rubio@gmail.com] <BR><B>Sent:</B> Friday, July 20, 2007 9:06
AM<BR><B>To:</B> MapGuide Users Mail List<BR><B>Subject:</B> [mapguide-users]
MGOS server harware & bandwidth<o:p></o:p></SPAN></P></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal>Hi list<o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal>I would like to know what kind of hardware are you using as
server and the bandwith recomended.<o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal>Just to have an idea...<BR clear=all><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><BR>-- <BR>Lic. Jorge Rubio
<o:p></o:p></P></DIV></DIV></BODY></HTML>