The variables "JAVA_MIN_MEM" and "JAVA_MAX_MEM" configured in "bin/setenv":

JAVA_MIN_MEM=2G
export JAVA_MIN_MEM
JAVA_MAX_MEM=3G
export JAVA_MAX_MEM 

were never passed to Fuse JVM.

The "ps -ef|grep karaf" command output doesn't show JVM options like "-Xms2G -Xmx3G".