[OSM-dev] Proposed database improvement

[Andy Robinson]

>-----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