[OSM-talk] [OSM-dev] Software development - most pressing issues

[Robert (Jamie) Munro]

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Tom Hughes wrote:
> I think live rendering is pretty much permanently off now because the
> queue is so long it wouldn't kick in anyway - it was only ever used
> when the queue was short.

That seems backwards to me. The queue should only be processed when live
rendering isn't going on. Things should only be added to the queue when
the live rendering service is too busy, or if they are too low a zoom to
practically render live.

The reason being that there's a fair chance that something on the queue
won't be looked at between being rendered and being marked out of date.
IMHO it would be better to give some people their tiles straight away,
rather than render tiles that no one might ever look at.

Robert (Jamie) Munro

P.s. If you haven't introduced Artem's new colour quantisation, and it's
still taking half the rendering time to reduce the colours of the tiles,
why not just leave them as 24bit. That would double the rendering speed.
Once the backlog is gone, you could then run a background process to
reduce the colours of the most popular tiles.
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