<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:st1="urn:schemas-microsoft-com:office:smarttags" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 11 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]-->
<title>Tooltip performance</title>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="City"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="place"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="PersonName"/>
<!--[if !mso]>
<style>
st1\:*{behavior:url(#default#ieooui) }
</style>
<![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:blue;
text-decoration:underline;}
p
{mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:12.0pt;
font-family:"Times New Roman";}
span.E-mailStijl19
{mso-style-type:personal-reply;
font-family:Arial;
color:navy;}
@page Section1
{size:612.0pt 792.0pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;}
div.Section1
{page:Section1;}
-->
</style>
</head>
<body lang=EN-US link=blue vlink=blue>
<div class=Section1>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hmm… I could imagine that somebody
would like tooltips on a layer, but would like the layer not to be selectable. I’m
finding it rather strange that the tooltip is dependent on the selectability of
a layer …. Was this also the case on Mapguide 6.5? (I’m a little in
doubt while typing this… )<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span lang=NL style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>Van:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Trevor We</span></font><font
size=2 face=Tahoma><span lang=NL style='font-size:10.0pt;font-family:Tahoma'>kel
[mailto:trevor.wekel@autodesk.com] <br>
<b><span style='font-weight:bold'>Verzonden:</span></b> vrijdag 17 november
2006 19:15<br>
<b><span style='font-weight:bold'>Aan:</span></b> Campbell, Keith A; <st1:PersonName
w:st="on">users@mapguide.osgeo.org</st1:PersonName><br>
<b><span style='font-weight:bold'>Onderwerp:</span></b> [mapguide-users] RE:
Tooltip performance</span></font><span lang=NL><o:p></o:p></span></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Hi Keith,</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>You can also disable selection for
layers which do not require tooltips. If a layer is not selectable, it is
not included in the query.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Thanks,</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Trevor</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Trevor
Wekel <br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, November 17, 2006
10:54 AM<br>
<b><span style='font-weight:bold'>To:</span></b> 'Campbell, Keith A'; <st1:PersonName
w:st="on">users@mapguide.osgeo.org</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: Tooltip performance</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Hi Keith,</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>You are correct with the basic flow of
events for generating the tooltips. The <st1:City w:st="on"><st1:place
w:st="on">AJAX</st1:place></st1:City> client sends the map coordinates of the
point along with the map name to the Web Extensions. The Web
Extensions in turn, forwards this information to the Server.
Once at the server, all of the layers in the map are queried to see
if they have any features underneath the point. Since every layer is
queried, the performance will depend on the number of layers in
the Map. Each FeatureSource for each layer will be queried. If
you have a number of layers from external databases, the database will be
queried for each layer.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Feature Service connection pooling and
caching may help. These are controlled by the following settings in
serverconfig.ini and should be accessible from Server Admin.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>[FeatureServiceProperties]</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>DataConnectionPoolSize = 20<br>
DataConnectionPoolExcludedProviders = OSGeo.SDF,OSGeo.SHP<br>
DataConnectionPoolEnabled = 1<br>
DataCacheSize = 100<br>
CacheSize = 100</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Just as a side note, I think MapGuide 6.x
handles tooltip generation client side. I don't think it goes back to the
server so it will be less affected by server load.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Thanks,</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Trevor</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Campbell,
Keith A [mailto:keith.campbell@atkinsglobal.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, November 17, 2006
6:53 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">users@mapguide.osgeo.org</st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Tooltip performance</span></font><o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><!-- Converted from text/rtf format -->I'm
finding that the performance of the tooltips is varying greatly and I'd like to
understand what is going on behind the scenes and therefore what factors are
affecting this.</span></font><o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Presumably
when the cursor s moved over the map, a mouseover event is triggered and this
sends the position information and state of the layers is sent back to the
server via an xmlhttprequest. The web extensions are used to identify what
object on what layer is at the map location, and the tooltip data is queried
and returned to the client, which is then displayed. So factors affecting this
process will be what is happening on the client machine, the network, and the
server at the time the process occurs.</span></font><o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>The
performance seems to change a great deal from very good to unacceptably slow
(the user would give up). I find this change strange because other applications
(e.g. MapGuide 6.x) run from the same client to the same server are not varying
nearly as much. It is also strange in that the initial request for the layout
and subsequent requests for layer data are not particularly slow when the
tooltips are. Are there any settings which can be altered to improve this? This
kind of unreliability could almost rule this technology out in my view.</span></font><o:p></o:p></p>
<p><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Keith</span></font>
<o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p align=center style='text-align:center'><strong><b><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black;background:
white'>This email and any attached files are confidential and copyright
protected. If you are not the addressee, any dissemination of this
communication is strictly prohibited. Unless otherwise expressly agreed in
writing, nothing stated in this communication shall be legally binding</span></font><font
color=red><span style='color:red;background:white'>.</span></font></b></strong><a
href="http://www.blackspider.com/"></a><o:p></o:p></p>
</div>
</body>
</html>