Without knowing exactly what's going on, it seems that I think mod_tile has a memory problem. IANAP, but after rendering a tile and converting the .meta, it seems all of the data stays in memory. Rendering subsequent tiles builds up the memory footprint quite quickly--at z5 and 4G of ram I can only generate 1 meta file at a time without restarting renderd to clear the memory.
For example: Rendering daemon Got incoming connection, fd 5, number 1 Render fd(5) z(5), x(4), y(12) Got incoming connection, fd 9, number 2 Render fd(9) z(5), x(5), y(12) Got incoming connection, fd 10, number 3 Got incoming connection, fd 11, number 4 ... Render fd(14) z(5), x(2), y(8) Render fd(7) z(5), x(1), y(8) <---- Up to here memory remains reasonable, maybe 20% used by "programs", 80% "cache" DONE TILE 5 0-7 8-15 <---- Here memory starts building up until the .meta file is complete. Here 80% "programs", 20% "cache" Produced .meta: /var/www/html/direct/5/0/0/0/0/8.meta At this point the .meta file is generated but RAM usage does not drop. Killing renderd causes RAM usage to drop back to normal (10% "programs", 20% "cache"). Perhaps obviously I'm using "System Monitor" in gnome-panel to measure memory usage. Let me know if something more scientific is desired. -- Dylan Type faster. Use Dvorak: http://dvzine.org
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