Hi,

to measure memory requirements of java programs, it is better use a
tool like jvisualvm. The JVM process aquires memory as it needs
according to its max heap and max permgen settings.
I ran your little snippet on my machine with java -Xmx5M -jar
clojure.jar, and
while jvisualvm reported around 2M heap usage (like a bare clojure
REPL), top showed a memory usage of about 25 Megabytes.

The default max heapsize is, at least on my machine with a 32bit JVM,
at around 128M, and lots of it will be allocated up front, regardless
how
much heap the running java programm needs.

Erik
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