Java HotSpot VM Options

Java command-line 옵션과 환경 변수들
-X 옵션은 표준이 아니어서 공지없이 바뀔 수 있다고 합니다 (이게 표준이 아니면.... ㅡㅡ;;;)
-XX 옵션도 안정적이지 않고 추천하지도 않는다고 합니다.

Some Useful -XX Options

Boolean options are turned on with -XX:+<option> and turned off with -XX:-<option>.

Numeric options are set with -XX:<option>=<number>. Numbers can include 'm' or 'M' for megabytes, 'k' or 'K' for kilobytes, and 'g' or 'G' for gigabytes (for example, 32k is the same as 32768).

String options are set with -XX:<option>=<string>, are usually used to specify a file, a path, or a list of commands

주요 옵션들

Option and Default Value	Description
-classpath or -cp	classpath
-Xmsn	Specify the initial size(default 2MB), k or K(kilobytes), m or M(megabytes)
-Xmxn	Specify the maximum size(default 64MB), k or K(kilobytes), m or M(megabytes)
-XX:HeapDumpPath=./java_pid.hprof	Path to directory or filename for heap dump. Manageable. (Introduced in 1.4.2 update 12, 5.0 update 7.)
-XX:-HeapDumpOnOutOfMemoryError	Dump heap to file when java.lang.OutOfMemoryError is thrown. Manageable. (Introduced in 1.4.2 update 12, 5.0 update 7.)

Java HotSpot VM Options
http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html

java - the Java application launcher
http://download.oracle.com/javase/1.5.0/docs/tooldocs/solaris/java.html