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Re: [Maposmatic-dev] Re: [cairo] Cairo & libpng/zlib parameters

From: Jeroen van Rijn
Subject: Re: [Maposmatic-dev] Re: [cairo] Cairo & libpng/zlib parameters
Date: Sun, 17 Jan 2010 15:10:42 +0100

On Sun, Jan 17, 2010 at 15:00, David MENTRE <address@hidden> wrote:
> I can't say if for those jobs Cairo is the bottleneck, let me know. Let
> me know also if you need more information.


Bear in mind that these times include postgis querying and some
additional set up. You could time more accurately as far as
mapnik/cairo is concerned by limiting yourself to the time spent in
ocitysmap/ _render_map_into_files

More specifically the timestamps between these messages:
LOG.debug('rendering from %s to %s.%s...' % (osm_map_file,

LOG.debug('saving %s.%s...' % (out_prefix, fmt))

The emitted log messages are not currently timestamped, but that can
be arranged. I think it's a good idea for us to add that anyway so we
can track down improvements and regressions better on our end as well.


"That's like saying that a squirrel is 48% juicier than an orange -
maybe it's true, but anybody who puts the two in a blender to compare
them is kind of sick." -- Linus Torvalds

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