尽可能使用非持久性、非持续性事件。
运行测试时，我们使用了极速非持久性可靠性水平。
For these runs, a reliability level of express non-persistent was used.
非持久性消息只存在于消息代理的内存中，出现崩溃时很可能丢失这些消息。
Non-persistent messages live only in the memory of the message broker, and in the event of a crash they most likely are lost.
非持久性属性只在GBean实例的生存期间保持它们的值，在实例消失后也消失。
Nonpersistent attributes retain their value during the life of the GBean instance and disappear when the instance goes away.
可以容纳持久性和非持久性消息的混合的队列必须在持久性列表结构中定义。
Queues that can hold a mixture of persistent and non-persistent messages must be defined in the persistent list structure.
下面将描述每个场景，并显示它们在非持久性和持久性事件方面的相对性能。
Each scenario is described, and its relative performance is shown for both non-durable and durable events.
图22展示了使用非持久性、非持续性消息时以上5个场景与基准场景比较得到的相对吞吐量。
Figure 22 shows the throughput relative to 1 simple rule for the five scenarios described above, when using non-persistent, non-durable messaging.
通常不推荐使用JMS发送模式为非持久性的持续性事件，因为如果服务器重启仍然会丢失事件。
It is not generally recommended to use durable events with a JMS delivery mode of non-persistent, because events could still be lost if the server restarts.
initrd对于在嵌入式系统中加载到RAM磁盘里的非持久性根文件系统来说也非常有用。
The initrd is also useful as a non-persistent root file system mounted in a RAM disk for embedded Linux systems.
图20显示了使用可靠性水平不同（可以保证的持久性和极速非持久性）的文件暂存器的两种测试的结果。
Figure 22 shows the results for two test runs using a file store with different reliability levels: assured persistent and express non-persistent.
为了缩短系统启动时间并降低整体负荷，应尽可能使用非持久性会话bean，而不应使用实体 bean（将自动维护状态信息）。
To reduce system startup times and general overhead, use non-persistent session beans rather than entity beans (which automatically maintain state information) whenever possible.
记录这些数值的实验环境为IBMxSeries 360服务器、4x2GHzIntelXeon处理器、3.5GBRAM、MicrosoftWindows 2000 (SP4)，并且使用非持久性的1K字节的XML消息。
These figures were recorded on an IBM xSeries 360 server with 4 x 2GHz Intel Xeon processors, 3.5 GB of RAM, and Microsoft Windows 2000 (SP4), using non-persistent 1K bytes XML messages.
这个结果导致捕食食饵系统的持久性、平凡解和所有半平凡解的不稳定性和不存在非一致平衡解。
The result leads to the permanence of the prey-predator systems, the instability of the trivial and all forms of semitrivial solutions, and the nonexistence of nonuniform steady-state solutions.
这个结果导致捕食食饵系统的持久性、平凡解和所有半平凡解的不稳定性和不存在非一致平衡解。
The result leads to the permanence of the prey-predator systems, the instability of the trivial and all forms of semitrivial solutions, and the nonexistence of nonuniform steady-state solutions.
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