[OSM-dev] discrepancy in Tile Server.

[Samir Faci (Dev)]

Dis-regard.  It seems I need to spend hours working on a problem, send
email to list.. then look at it again for another 10 minutes in order
to find the solution.

--
Samir

On Thu, Jun 24, 2010 at 2:11 PM, Samir Faci (Dev) <dev at esamir.com> wrote:
> So.. I spent a bit more time investigating this.  My initial numbers
> were off, but I do have tiles missing from Z11.
>
> If my math is right, z11 should have 65636 meta files.  I tried
> re-generating the tile set for that particular zoom level.  I renamed
> dir 11 to move it aside, and requeued up Z11 to be rendered using
> render_all.
>
> I have renderd running as a service.  It should be working fine, since
> that's how I generated the entire tile set initially.
>
> /usr/bin/render_list -v --all -n 4
> --socket=/var/run/renderd/renderd.sock --min-zoom=11 --max-zoom=11  >&
> log.txt
>
> Now, despite the fact that I didn't see any errors in the log file.
> It didn't create any new files on the file system.  Does it only
> render files past the last time it ran?
>
> Do I need to touch the planet-import-complete file? Or do anything
> special to reset the state back in time?
>
> --
> Samir
>
>
> On Tue, Jun 22, 2010 at 4:42 PM, Jon Burgess <jburgess777 at gmail.com> wrote:
>> On Tue, 2010-06-22 at 22:33 +0100, Jon Burgess wrote:
>>> On Tue, 2010-06-22 at 12:13 -0500, Samir Faci (Dev) wrote:
>>> > I'm in the process of updating a tile server switching from a Centos
>>> > with code/utils that are probably 6 months out of date maybe a bit
>>> > more, to a new lucid setup.
>>> >
>>> > Something similar to:
>>> > http://weait.com/content/build-your-own-openstreetmap-server
>>> >
>>> > Now, everything works fine, and I use renderd + render_list to
>>> > pre-generate a few zoom levels.
>>> >
>>> > The part that perplexes me is that it seems that that some of the
>>> > .meta files are missing, compared to the Centos machine.
>>> >
>>> > I pre-rendered 0-13 and on the Centos machine and it created:  3112877
>>> > meta files.  On the updated Ubuntu setup (which is more current) 0-13
>>> > generated: 1394208.
>>> >
>>> > Did the algorithm change?  Is there an explanation for the large
>>> > discrepancy besides... just an error in my setup?
>>>
>>> According to my maths, the total of all meta tiles for zoom 0 - 13 is
>>> 33074069.
>>
>> Sorry - make that only: 1398104. I added up the wrong column on my
>> spreadsheet. This makes your Ubuntu numbers seems about right. I'd look
>> to see whether you are counting the right files on the CentOS setup.
>>
>>
>>> If the load average on the machine gets too high while doing
>>> the rendering then some tiles can get lost, but it should print a
>>> warning message each time this happens.
>>>
>>> I think render_old will let you run it a second time and it'll just
>>> request the missing tiles to be rendered (provided the planet timestamp
>>> file is older than the ones you generated before).
>>>
>>>       Jon
>>>
>>>
>>
>>
>>
>
>
>
> --
> --
> Samir Faci
> *insert title*
> fortune | cowsay -f /usr/share/cows/tux.cow
>



-- 
--
Samir Faci
*insert title*
fortune | cowsay -f /usr/share/cows/tux.cow