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Map's buffer_size causes mapnik to fetch and render too much data #781

artemp opened this Issue Oct 11, 2011 · 2 comments


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artemp commented Oct 11, 2011

When a buffer_size is used, data around the tile is fetched and rendered. Sometimes this can be avoided, not requesting the data or not rendering.

Find early return situations to skip using the buffer_size or using a smaller value.

Some symbolizers (Line, Polygon) need a very small buffer.

Investigate using Layer buffered extent in feature_style_processor when fetching features and only some symbolizers are present.


artemp commented Oct 11, 2011

[springmeyer] moving to thematic milestone on performance.


springmeyer commented Jan 16, 2013

closing, will track at #1566

@springmeyer springmeyer pushed a commit that referenced this issue Jan 16, 2013

Dane Springmeyer Add layer buffer-size to changelog - refs #1566,#1545,#781 1d7a475

@PetrDlouhy PetrDlouhy added a commit to PetrDlouhy/mapnik that referenced this issue Aug 22, 2013

@PetrDlouhy Dane Springmeyer + PetrDlouhy Add layer buffer-size to changelog - refs #1566,#1545,#781 ecb9e59
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