[GRASS-dev] [GRASS GIS] #2185: Painfully Slow 'v.in.ogr' Vector Import

[GRASS GIS]

#2185: Painfully Slow 'v.in.ogr' Vector Import
-------------------------+------------------------------------------------
  Reporter:  justinzane  |      Owner:  grass-dev@…
      Type:  defect      |     Status:  new
  Priority:  normal      |  Milestone:  7.0.6
 Component:  Vector      |    Version:  svn-trunk
Resolution:              |   Keywords:  import, OGR, performance, v.in.ogr
       CPU:  x86-64      |   Platform:  Linux
-------------------------+------------------------------------------------

Comment (by neteler):

 Wow. After full recompilation, with gcc it does "hang":

 {{{
 ## gcc production
 INTEL="-march=native"
 MYGCC="-fdiagnostics-color"
 MYCFLAGS="-O2 $INTEL $MYGCC"
 MYCXXFLAGS="-O2"
 MYLDFLAGS="-Wl,--no-undefined"
 MYLDFLAGS="-s $MYLDFLAGS"

 # clang
 #CC=clang CXX=clang++ CFLAGS="-O2" CXXFLAGS="-O2" LDFLAGS="-s" ./configure
 \

 # gcc
 LDFLAGS="$MYLDFLAGS" CFLAGS="$MYCFLAGS" CXXFLAGS="$MYCXXFLAGS" ./configure
 \
   --with-cxx \
   --enable-largefile \
 ...
 }}}

 Now:

 {{{
 GRASS 7.2.1svn (latlong_wgs84):~ > time -p v.in.ogr
 in=world_AOI_latlong.geojson out=world_AOI_latlong --o
 ...
 -----------------------------------------------------
 1 input polygons
 Total area: 2.37675E+13 (2 areas)
 Area without category: 2.04916E+11 (1 areas)
 -----------------------------------------------------
 Copying features...
  100%
 Building topology for vector map <world_AOI_latlong at user1>...
 Registering primitives...
 3 primitives registered
 19 vertices registered
 Building areas...
  100%
 2 areas built
 One isle built
 Attaching islands...
  100%
 Attaching centroids...
  100%
 Number of nodes: 1
 Number of primitives: 3
 Number of points: 0
 Number of lines: 0
 Number of boundaries: 2
 Number of centroids: 1
 Number of areas: 2
 Number of isles: 1
 real 0.09
 user 0.04
 sys 0.01
 }}}

 So, unfortunate clang compiler settings before or gcc-is-better-than-clang
 here?

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/2185#comment:34>
GRASS GIS <https://grass.osgeo.org>