[ka-Map-users] Can someone answer this question please or tell mewho I should ask it to?

[Samuel Doyle]

Hi, 
I played with the force option in tile.php which appeared to be very resource intensive. I extended upon this by adding another 'force_redraw' field in the metadata section for each layer of interest in the map file. This resulted in the desired effect however, it is still very resource intensive even if I'm requesting just one layer. For every request my server ends up thrashing like mad. Does anyone have any insight they could provide?

Thanks, S.D.

"Delfos, Jacob" <Jacob.Delfos at maunsell.com> wrote:     Samuel,
  
 Have you checked whether the URL is actually different?  Are you saying it serves out the same tiles, despite the different timestamp?  Did you check whether any tiles actually get re-written?
 Have you tried playing with the "force" parameter of  tile.php? If this creates a new tile, it means the problem is it decides it  doesn't need to be re-created. If "force" doesn't work, it means it isn't able  to re-create the tiles. 
 Is there a timestamp directory  present?
  
 regards,
  
 Jacob
  
  

       
---------------------------------
   From: Samuel Doyle [mailto:sdoyle_2 at yahoo.com]    
Sent: 28 July 2006 09:31
To: Delfos,    Jacob
Subject: RE: [ka-Map-users] Can someone answer this question    please or tell mewho I should ask it to?


   
Thanks for the repsonse.

Yes I have included the    redraw_interval and have tried the various combinations even setting    tile_source to nocache setting the redraw_interval to be both greater then and    less then the refresh_inteval even though it looks as if it should be less    then what you set for the refresh_interval. In the end In the end I always end    up needing to delete the tiles directory populated by mapserver in order to    get them regenerated again.

"Delfos, Jacob"    <Jacob.Delfos at maunsell.com> wrote:             Samuel,
      
     Have you looked at the redraw_interval, described in      init.php? That appends a timestamp to the URL of the tile, to      force redrawing of the tiles. refresh-interval only does a      re-request, returning a cached tile.
      
     regards,
      
     Jacob
      

                   
---------------------------------
       From:        ka-map-users-bounces at lists.maptools.org        [mailto:ka-map-users-bounces at lists.maptools.org] On Behalf Of        Samuel Doyle
Sent: 28 July 2006 07:33
To:        ka-map-users at lists.maptools.org
Subject: [ka-Map-users] Can        someone answer this question please or tell mewho I should ask it        to?


       
Sorry but I haven't received any answers for the questions I        have posted here but this one is a bit important.

After poking        around and guessing at based on what I noticed in the KaMap code I have        place a refresh_interval value in a metadata section within a layer in my        map file. Now, I can see a periodic update on the map but the problem is        when I have modifed a dbf file under mapserver those changes are not        reflected. So the question is, is there something I need to do special to        get MapServer or KaMap or whatever to detect an update done to a map so        that it is served properly?? These changes to the map files are being done        programatically and not by hand.

Thanks,    S.D.


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