Tomcat increases memory

Environment:

64-bit apache-tomcat-7.0.40

Open this file Apache-tomcat-7.0.37\bin\catalina.bat ,

In the Echo Using catalina_base: The upper line of "%catalina_base%" adds the following code:

Set java_opts=-xms1024m-xmx4096m-xx:permsize=128m-xx:maxpermsize=256m

Post-join positions are as follows:

REM----- Execute  the requested Command ---------------------------------------

Setjava_opts=-xms1024m -xmx4096m -XX:PermSize=128m -XX:MaxPermSize=256m

EchoUsingCatalina_base:   "%catalina_base%"

Parameter description:

-XMS: Initial heap size, minimum memory used, higher CPU performance This value should be set to a larger

-xmx:java heap maximum, maximum memory used

The above two values are the minimum and maximum memory allocated for the JVM, depending on the size of the hardware physical memory, and are recommended to be half the physical memory.

-xx:permsize: Setting a permanent storage area for memory

-xx:maxpermsize: Set a permanent storage area for maximum memory

(GO) Tomcat increases memory