libvips/benchmark/benchmarkn-osx.sh

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#!/bin/bash
uname -a
gcc --version
vips --version
# how large an image do you want to process?
# sample2.v is 290x442 pixels ... replicate this many times horizontally and
# vertically to get a highres image for the benchmark
tile=13
# how complex an operation do you want to run?
# this sets the number of copies of the benchmark we chain together:
# higher values run more slowly and are more likely to be CPU-bound
chain=1
echo building test image ...
echo "tile=$tile"
vips im_replicate sample2.v temp.v $tile $tile
if [ $? != 0 ]; then
echo "build of test image failed -- out of disc space?"
exit 1
fi
echo -n "test image is" `header -f width temp.v`
echo " by" `header -f height temp.v` "pixels"
max_cpus=`vips im_concurrency_get`
echo "max cpus = $max_cpus"
echo "starting benchmark ..."
echo /usr/bin/time vips \
--vips-concurrency=xx \
im_benchmarkn temp.v temp2.v $chain
for((cpus = 1; cpus <= max_cpus; cpus++)); do
echo cpus = $cpus
/usr/bin/time vips \
--vips-concurrency=$cpus \
im_benchmarkn temp.v temp2.v $chain 2>&1
/usr/bin/time vips \
--vips-concurrency=$cpus \
im_benchmarkn temp.v temp2.v $chain 2>&1
/usr/bin/time vips \
--vips-concurrency=$cpus \
im_benchmarkn temp.v temp2.v $chain 2>&1
done