在日食中设置JVM参数的正确方法是什么？ [英] what is the right way to set JVM param's in eclipse

问题描述

我正在使用eclipse 4.2执行junit测试。
测试使用大量的内存，所以我想做的是放大分配给jvm的内存。我想知道在eclipse ini文件中设置堆内存参数和运行配置之间是否有区别？

解决方案

请注意，eclipse
启动的Java进程的内存设置与eclipse本身的最大允许内存大小不同。

eclipse本身的容限在启动时设置通过

-vmargs -Xmx1024M -Xms1024M -XX：PermSize = 2048m -XX：MaxPermSize = 2048m

请注意，mx中的m是区分大小写的，而1024M中的m是
不区分大小写;而单X选项拼写为=，但
双X选项拼写为=。

JVM的内存大小通过 eclipse启动，这是您想影响单元测试的一种方法，在 eclipse中设置：

Window :: Preferences :: Java :: Installed JREs :: Edit :: Default Vm参数：
-Xms128M -Xmx2048M

（菜单项的精确标题可能因eclipse版本而异）。

i am using eclipse 4.2 to execute a junit test. the test uses a lot of memory so what i want to do is to enlarge the memory allocated to the jvm. i wanted to know if there is a differences between setting the heap memory param's in the eclipse ini file and the run configuration?

解决方案

Note the memory settings for Java processes started by eclipse are different from the maximum allowed memory size for eclipse itself.

The allowance for eclipse itself is set on startup by

-vmargs -Xmx1024M -Xms1024M -XX:PermSize=2048m -XX:MaxPermSize=2048m

Note that the m in "mx" is case sensitive, while the m in "1024M" is case insensitive; and the single-X options are spelt without "=", but the double-X options are spelt with "=".

The memory size for JVMs started by eclipse, which is what you want to influence unit tests, is set within eclipse:

Window::Preferences::Java::Installed JREs::Edit::Default Vm Arguments: -Xms128M -Xmx2048M

(Exact titles of menu entries may vary by eclipse version.)

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