OrientDB ..setting 'memory.leftToOS' not taking into account heap memory

[toz info]

i got this ORIENTDB warning for my headless.piccaport on a 4gb linux.

startet with:

CMD:

 java -Xms1g -Xmx2g -Dcache.size=10000 -Duser.home=/opt/picapport -jar headless_v730.jar -pserver.port=8080 -probot.root.0.path=/mnt/pics/Bilder/ -pgui.enabled=true -pupload.path="\$YYYY\$-\$MM\$-\$DD\$/\$TITLE\$" -pclient.folder.sort=name

LOG:

INFORMATION: JVM can use maximum 1820MB of heap memory

Sep 26, 2018 8:38:21 PM com.orientechnologies.common.log.OLogManager log

INFORMATION: Because OrientDB is running outside a container 2g of memory will be left unallocated according to the setting 'memory.leftToOS' not taking into account heap memory

Sep 26, 2018 8:38:21 PM com.orientechnologies.common.log.OLogManager log

INFORMATION: OrientDB auto-config DISKCACHE=97MB (heap=1.820MB os=3.965MB)

Sep 26, 2018 8:38:21 PM com.orientechnologies.common.log.OLogManager log

IS THERE A CMD-LINE OPTIONs the pass more memory to Orientdb.

i am no developer, google as ambiquious to me....

thanks for helping me out, great software anyway...

[toz info]

i tried this CMD-LINE-Options with java and the warning-message is gone.

-Xmx800m -Dstorage.diskCache.bufferSize=1024

BUT: What is the best way for a 4GB Ram linux-debian?

i cannot see, i a not a DB-Developer...sorry for this...