linux run jar to set memory

1. Script

nohup java -Xms1g -Xmx1g -XX:PermSize=256m -XX:MaxPermSize=512m -XX:MaxNewSize=512m  -jar qat-server.jar > qat-server.out 2>&1 &

2. Configuration

-Xms 1g configure the initial heap memory 1g;
-Xmx 1g configure the maximum heap memory 1g;
-XX:PermSize=256m Perm (commonly known as the method area) occupies the value of the entire heap memory;
-XX:MaxPermSize=512m method area occupies the entire heap memory Maximum value-
XX:MaxNewSize=512m New generation memory upper limit