[talk-au] rendering times for NSW maps

David Groom reviews at pacific-rim.net
Sat Nov 17 14:48:31 GMT 2007


blank
----- Original Message ----- 
From: "Brent Easton" <b.easton at exemail.com.au>
To: "Paul" <mylists at wilsononline.id.au>; "OSM Australian Talk List" 
<talk-au at openstreetmap.org>
Sent: Saturday, November 17, 2007 7:06 AM
Subject: Re: [talk-au] rendering times for NSW maps


> Hi Paul,
>
> The weekly dump of the planet.osm file happens Thrusday morning our time, 
> finishing mid to late morning. That data is then loaded into a PostGIS 
> database (more hours) from which the Mapnik renderings happens.
>
> Tiles are only marked to be re-rendered when people actually look at them 
> so when you first go to an area, you don't see any change.

Also if your browser has cached the original images, then simply "looking" 
at them again may not actual cause a re-render as the server doesn't know 
anyone is "looking" at the tile .

David


> Some time later, depending on how many other tiles around the world are 
> being view at the same time, your rendering will be done and when you go 
> back, there are your changes.
>
> For various technical reasons (disk space etc.), this process breaks and 
> is re-run, so it can be well into the weekend or early next week before 
> you see the changes from mapnik.
>
> Check out te osmarender layers though. Osmarender is now running on a new 
> server and it is turbo-charged. Changed tiles are marked automatically and 
> can be re-rendered within the hour. Some times it takes longer though, or 
> you can request a manual re-render which happens real fast.
>
> Regards,
> Brent.
>
>
> *********** REPLY SEPARATOR  ***********
>
> On 17/11/2007 at 8:42 AM Paul  wrote:
>
>>This is probably a regular question but I thought changed titles where
>>rendered once a
>>week on Wed. I put some new roads around Bathurst on Tuesday but most
>>haven't showed and
>>some only show at different zoom levels.
>>What the latest take on this?
>>
>>Paul
>>
>>
>>_______________________________________________
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>>
>>
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>
>
> ____________________________________________________________
> Brent Easton
> Analyst/Programmer
> University of Western Sydney
> Email: b.easton at uws.edu.au
>
>
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