[MapProxy] SQLite cache types vs MBTiles

Oliver Tonnhofer olt at omniscale.de
Tue Nov 26 02:35:45 PST 2013

On 26.11.2013, at 11:21, BERÉNYI Attila wrote:
> I have reported this "issue". It still persists, but the generated cache looks all right - however, I am not quite sure that the actual tile is written to the MBTiles/SQLite DB when there is a lock error on it - that part needs further testing.

I doubt that the tiles that triggered the timeout are written.

> I have tried with 32 parallel processes (-c 32) on a virtual server with 16 vCPU, 
> The iowait (i.e. wa in top) does not exceed 2, but the 15-minute load is still only 8-ish...

2%? Ok, that's low. How many tiles do you insert per second? (There is no tile/s output, you have to calculate it from log lines.)


Oliver Tonnhofer    | Omniscale GmbH & Co KG    | http://omniscale.com
http://mapproxy.org | https://github.com/olt    | @oltonn

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