进程检查点机制是在进程正常运行的适当时刻设置检查点，将进程状态保存到稳定存储器中。
Checkpoint facility enables the intermediate state of a running process to be saved to stable storage.
在这种应用中，可以以特定的间隔(检查点)冻结一组相关的进程，然后解冻特定的时间点以回到某个已知状态。
In this application, you could freeze a collection of related processes at specific intervals (checkpoints), then thaw a particular epoch as a way to roll back to a known good state.
在使用WPAR管理器重新部署WPAR时，将为所有的进程设置检查点，然后在目标系统中重新启动，从而对应用程序或者WPAR用户产生最小的影响。
When a WPAR is relocated using WPAR Manager, all processes are checkpointed and then restarted on the target system, with minimal impact on the application or WPAR user.
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