[OSM-dev] Proposed database improvement

SteveC steve at asklater.com
Thu Aug 31 16:40:51 BST 2006


it might be the small change I made to the renderer as it was crashing,
see last changset... nick? (W)?

* @ 31/08/06 04:25:41 PM Andy_J_Robinson at blueyonder.co.uk wrote:
> 
> >-----Original Message-----
> >From: Nick Hill [mailto:nick at nickhill.co.uk]
> >Sent: 31 August 2006 4:18 PM
> >To: Andy Robinson
> >Cc: dev at openstreetmap.org
> >Subject: Re: [OSM-dev] Proposed database improvement
> >
> >
> >Andy Robinson wrote:
> >> Nice work Nick :-)
> >
> >Thanks.
> >
> >>
> >> I noted that the renderer still had trouble drawing the map data on the
> >> tiles for the centre of Sutton Coldfield. But after the rest of the map
> >had
> >> drawn I went back and reloaded the couple of affected tiles and they
> >> refreshed properly so it certainly appears that performance (in terms of
> >> time of delivery and the actual data provided) is more reliable but still
> >a
> >> bit flaky. Which presumably means that these are not load issues.
> >
> >I think you are seeing a non-graceful failure mode in the case of
> >overload for the tile server. I would be most concerned to find the data
> >actually being delivered to tile were corrupt. I haven't seen any
> >compelling evidence of data being served erroneous WRT the OSM data set.
> 
> No, I haven't seen anything served erroneous WRT the OSM data set either.
> The issues that remain seem to focus down on timeout or connectivity issues
> resulting  in something being left out rather than something messing up the
> data that is sent out.
> 
> Cheers
> 
> Andy
> 
> Andy Robinson
> Andy_J_Robinson at blueyonder.co.uk
> 
> 
> 
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have fun,

SteveC steve at asklater.com http://www.asklater.com/steve/




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