[OSM-dev] renderd multithreading question

Frederik Ramm frederik at remote.org
Mon Nov 16 11:04:59 GMT 2009


Jon,

Jon Burgess wrote:
> I updated the render_list code in SVN to use multiple request threads.
> Each request is generated using cmdRenderBulk which should mean the
> normal mod_tile requests will get priority.

Thank you, it seems to work well. The statistics it gives on stdout 
during the process is now slightly misleading because it claims to have 
"rendered" a tile when in fact it has only despatched the request to 
renderd; only the final statistics (after waiting for renderd threads) 
is accurate. But that is irrelevant for my application.

render_list now makes "bulk" requests, and I assume that mod_tile makes 
"priority" requests - but there seems to be a third category in between 
these (those that are neither bulk nor priority) - what's this used for?

Bye
Frederik





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