Hello I'm running java on an ARM device (http://www.acmesystems.it/arietta)
and it's incredibly slow, the results of time java are:
openjdk version "1.8.0_66-internal"
OpenJDK Runtime Environment (build 1.8.0_66-internal-b17)
OpenJDK Zero VM (build 25.66-b17, interpreted mode)
real 0m51.499s
user 0m1.656s
sys 0m46.477s
Specs:
CPU Atmel AT91SAM9G25 SoC (ARM9 @ 400Mhz)
DDR2 Ram 128 or 256 MByte
Any idea about how to make it faster?
In order to make it faster i used the JamVM. And java 7, not 8. With this it looks like a normal execution time:
For this i had to install the icedtea-7-jre-jamvm package with:
apt-get install icedtea-7-jre-jamvm
And the results for: time java -jamvm -version are:
java version "1.7.0_91"
OpenJDK Runtime Environment (IcedTea 2.6.3) (7u91-2.6.3-1~deb8u1)
JamVM (build 2.0.0, inline-threaded interpreter with stack-caching)
real 0m0.913s
user 0m0.742s
sys 0m0.156s