#2750: LZ4 when writing raster rows; better than double I/O bound r.mapcalc
speed
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Reporter: sprice | Owner: grass-dev@…
Type: enhancement | Status: new
Priority: normal | Milestone: 7.1.0
Component: Raster | Version: svn-trunk
Resolution: | Keywords: ZLIB LZ4 ZSTD
CPU: OSX/Intel | Platform: MacOSX
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Comment (by wenzeslaus):
I was not able to make BZIP2 work for me. I would say I miss something
like addition to `GISDEPS` but I was not able to fix it (getting undefined
reference to some BZ function).
I was able to run the tests successfully with LZ4 (on modified r66770):
{{{
GRASS_COMPRESSOR=LZ4 \
./bin.../grass71 /grassdata/nc_basic/practice1 --exec \
python -m grass.gunittest.main --location nc_basic --location-type nc
}}}
The benchmarks look really good. I was getting quite good results before
even on the random data, perhaps pure luck. But I wrongly recorded the
region, it seems, so even with the seed I cannot reproduce; not important
anyway.
--
Ticket URL: <https://trac.osgeo.org/grass/ticket/2750#comment:24>
GRASS GIS <https://grass.osgeo.org>
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