mapbox-vector-tiles shapely "speedups" test

README.md

Clone mapbox-vector-tile repo

git clone https://github.com/CalthorpeAnalytics/mapbox-vector-tile.git
git checkout enable-shapely-speedups

Build the Docker image for testing

Copy the Dockerfile in this gist into the directory where you cloned repo then run:

docker build -t mapbox-vector-tiles-dev .

Run benchmark in a Docker container

time docker run --rm -it mapbox-vector-tiles-dev bash -c 'zcat fgeoms.wkt.zip | head -10000 | python bench/bench_encode.py'

NOTE: The Docker image uses Python 3 so it needs the changes for the benchmark script from this PR tilezen/mapbox-vector-tile#90 in order to work.

Dockerfile

FROM python:3.5.2

RUN apt-get update && apt-get install -y \
      build-essential \
      libgeos-dev && \
    rm -rf /var/lib/apt/lists/*

# Install Shapely 1.5.x b/c Shapely 1.6.x appears to 
# have "speedups" enabled by default
RUN pip install shapely==1.5.17

RUN mkdir -p /code
WORKDIR /code

COPY . /code

RESULTS.md

master branch (ee6e64c)

  > time docker run --rm -it mapbox-vector-tiles-dev bash -c 'zcat fgeoms.wkt.zip | head -10000 | python bench/bench_encode.py'
  > <snip>
  > Perf result :
  >      14925438 function calls (14876891 primitive calls) in 16.969 seconds
  > <snip>
  > docker run --rm -it mapbox-vector-tiles-dev bash -c   0.04s user 0.02s system 0% cpu 18.769 total

enable-shapely-speedups branch (b339118)

  > time docker run --rm -it mapbox-vector-tiles-dev bash -c 'zcat fgeoms.wkt.zip | head -10000 | python bench/bench_encode.py'
  > <snip>
  > Perf result :
  >     13964306 function calls (13915759 primitive calls) in 14.102 seconds
  > <snip>
  > docker run --rm -it mapbox-vector-tiles-dev bash -c   0.03s user 0.02s system 0% cpu 15.831 total