遗憾的是，当许多这样的系统消失时，其中的操作系统也随之消失。
Unfortunately, when many of these systems pass, their operating systems pass along with them.
暂挂和重新调度线程的开支很显著，其中包括JVM、操作系统和硬件的工作。
There is significant overhead to suspending and rescheduling a thread, which involves work by the JVM, operating system, and hardware.
您可以构建自己的定制虚拟映像，在其中包含额外的软件或修改操作系统配置。
You can build your own custom virtual images in order to include additional software or make operating system configuration changes.
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