HI, MInseong, VishalWe all often use hackbox to build android, and the jack-server seems a bottleneck for us.I tried to update SERVER_PORT_SERVICE and SERVER_PORT_ADMIN in ~/.jack-settings as following:SERVER_PORT_SERVICE=8176SERVER_PORT_ADMIN=8177And I found I could start the jack-server under my account, and no need to kill the jack-server under minseon.yongqin.liu@hackbox.linaro.org:~/nougat$ ps -ef|grep com.android.jack.launcher. ServerLauncher yongqin+ 2379 1 99 13:23 pts/4 00:19:27 java -XX:MaxJavaStackTraceDepth=-1 -Djava.io.tmpdir=/tmp -Dfile.encoding=UTF-8 -XX:+TieredCompilation -cp /home/yongqin.liu/.jack-server/launcher.jar com.android.jack.launcher. ServerLauncher yongqin+ 6804 15997 0 13:41 pts/16 00:00:00 grep --color=auto com.android.jack.launcher.ServerLauncher minseon+ 13453 1 15 Oct29 ? 02:58:18 java -XX:MaxJavaStackTraceDepth=-1 -Djava.io.tmpdir=/tmp -Dfile.encoding=UTF-8 -XX:+TieredCompilation -cp /home/minseong.kim/.jack-server/launcher.jar com.android.jack.launcher. ServerLauncher yongqin.liu@hackbox.linaro.org:~/nougat$ I will use these setting for my future android compilation, till I found any problem about it.You could try to update it as well((or use the default) ) to see if it helps your android compilation.and could co-exist with my jack-server instance.--Best Regards,Yongqin Liu------------------------------------------------------------ --- #mailing listlinaro-android@lists.linaro.org