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da1981135b
By eliminating the linear look up of the dirtyQueue for every newly added rendering request, it should be possible to significantly increase the length of the dirty rendering queue. At the moment the queue length is set to 1000 metatiles, which at a typical rate of 2 - 3 metatiles a seconds is a buffer of only 5 - 10 minutes. With a much longer queue, the excess daytime requests can be moved into the quieter night time hours, which could improve the overall long-term throughput if the server is at its limit of what it can handle. All operations on the dirty queue should now be O(1).
86 lines
2.8 KiB
C
86 lines
2.8 KiB
C
#ifndef RENDER_CONFIG_H
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#define RENDER_CONFIG_H
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#define MAX_ZOOM 18
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// MAX_SIZE is the biggest file which we will return to the user
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#define MAX_SIZE (1 * 1024 * 1024)
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// With directory hashing enabled we rewrite the path so that tiles are really stored here instead
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#define DIRECTORY_HASH
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#define HASH_PATH "/var/lib/mod_tile"
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// TILE_PATH is where Openlayers with try to fetch the "z/x/y.png" tiles from
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// this is now only used if DIRECTORY_HASH is undefined
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//#define TILE_PATH "/var/www/html/osm_tiles2"
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// MAX_LOAD_OLD: if tile is out of date, don't re-render it if past this load threshold (users gets old tile)
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// (This is the default value. Can be overwritten in Apache config with ModTileMaxLoadOld.)
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#define MAX_LOAD_OLD 5
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// MAX_LOAD_MISSING: if tile is missing, don't render it if past this load threshold (user gets 404 error)
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// (This is the default value. Can be overwritten in Apache config with ModTileMaxLoadMissing.)
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#define MAX_LOAD_MISSING 10
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// MAX_LOAD_ANY: give up serving any data if beyond this load (user gets 404 error)
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#define MAX_LOAD_ANY 100
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// Location of osm.xml file
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#define RENDERD_CONFIG "/etc/renderd.conf"
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// The XML configuration used if one is not provided
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#define XMLCONFIG_DEFAULT "default"
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// Maximum number of configurations that mod tile will allow
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#define XMLCONFIGS_MAX 10
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// Mapnik input plugins (will need to adjust for 32 bit libs)
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#define MAPNIK_PLUGINS "/usr/local/lib64/mapnik/input"
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// Default directory to search for fonts. Recursion can be enabled if desired.
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#define FONT_DIR "/usr/local/lib64/mapnik/fonts"
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#define FONT_RECURSE 0
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// Typical interval between planet imports, used as basis for tile expiry times
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#define PLANET_INTERVAL (7 * 24 * 60 * 60)
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// Planet import should touch this file when complete
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#define PLANET_TIMESTAMP "/planet-import-complete"
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// Timeout before giving for a tile to be rendered
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// (This is the default value. Can be overwritten in Apache config with ModTileRequestTimeout.)
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#define REQUEST_TIMEOUT (3)
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#define FD_INVALID (-1)
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#define MIN(x,y) ((x)<(y)?(x):(y))
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#define MAX(x,y) ((x)>(y)?(x):(y))
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#define MAX_CONNECTIONS (2048)
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// default for number of rendering threads
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#define NUM_THREADS (4)
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// Use this to enable meta-tiles which will render NxN tiles at once
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// Note: This should be a power of 2 (2, 4, 8, 16 ...)
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#define METATILE (8)
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//#undef METATILE
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//Fallback to standard tiles if meta tile doesn't exist
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//Legacy - not needed on new installs
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//#undef METATILEFALLBACK
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// Metatiles are much larger in size so we don't need big queues to handle large areas
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#ifdef METATILE
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#define QUEUE_MAX (64)
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#define REQ_LIMIT (32)
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#define DIRTY_LIMIT (1000)
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#define HASHIDX_SIZE 2213
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#else
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#define QUEUE_MAX (1024)
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#define REQ_LIMIT (512)
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#define DIRTY_LIMIT (10000)
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#define HASHIDX_SIZE 22123
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#endif
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// Penalty for client making an invalid request (in seconds)
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#define CLIENT_PENALTY (3)
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#endif
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