Jvm memory problem

-Xms
-Xmx
-Xmn
these three parameters specify the size of jvm heap memory, so how to specify the overall memory size of jvm.
is heap + stack + method area + program counter + local method stack where is the overall memory size specified
and what is the default memory size of heap and stack?
is there a big answer?

Mar.07,2021

default size can be used: java-XX:+PrintFlagsFinal-version | findstr HeapSize this command to view

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1beb00f-39dee.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1beb00f-39dee.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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