[INTDIST-57] Investigate using JSR-200 packing for populated system directory in distribution

Tue, 19 Jun 2018 16:22:14 +0000

Using a simple script:

#!/bin/sh

input="$1"
base=`echo $1 | sed 's/.jar$//'`
output="$base.pack.gz"

echo -n "Compressing $input ..."
pack200 -q "$output" "$input"
if [ $? -eq 0 ]; then
rm -f "$input"
echo " success"
else
rm -f "$output"
echo " failed"
fi

and running

user@work : ~/distribution-karaf-0.5.0-SNAPSHOT/system$ time find . -name *.jar | sort -u | xargs -n 1 ~/p.sh
real 9m49.336s
user 30m25.764s
sys 1m41.299s

results in ~50% size savings in the resulting distrution. It is non-functional because feature:install fails to install, but that is something that could be fixed by an appropriate plugin into karaf.

Investigate how this could be integrated into our simultaneous release distribution.

OpenDaylight JIRA

[INTDIST-57] Investigate using JSR-200 packing for populated system directory in distribution