添加线程和异步耗时操作的过载。
Adding threaded and async overloads for time consuming operations.
异步获取耗时操作的结果。
但是这两个主要部分——启动一个调用的Portlet和获取耗时操作的数据的Servlet如何一起交互呢？
But how do the two main parts — the portlet which starts one call, and the servlet which gets the long-running data — interact together?
这样做是为了提高效率，以便每次有消息需要处理的时候，不会在服务器上执行这种耗时的操作。
This is done for efficiency, so that this time-consuming operation is not performed on the server every time a message needs to be processed.
整个缓冲区大小对DB2性能有巨大影响，这是因为大量的页可以显著地减少I/O这一最耗时的操作。
The overall buffer size has a significant effect on DB2 performance, because a large number of pages can significantly reduce I/O, which is the most time-consuming operation.
这是一个耗时的操作。
与访问已经在计算机内存中的数据相比，这种输入/输出 (I/O)操作非常耗时。
This input/output (I/O) operation is time-consuming, compared with the amount of time required to access data that’s already in computer memory.
如果UI线程需要处理每一件事情，那些耗时很长的操作——诸如访问网络或查询数据库等——将会阻塞整个UI(线程)。
Specifically, if everything is happening in the UI thread, performing long operations such as network access or database queries will block the whole UI.
此时，在那些耗时的操作结束之前UI都不会分发任何事件，包括绘制事件。
No event can be dispatched, including drawing events, while the long operation is underway.
如果有耗时的操作，你应该把这些操作放在另外的线程中进行处理(后台线程或者工作线程)。
If you have long operations to perform, you should make sure to do them in extra threads (background or worker threads).
与消耗时间不同，对于声明游标的语句，CPU时间是打开游标、所有读取操作和关闭游标的时间总和。
Unlike elapsed time, in case of a declare cursor statement the CPU time is the sum of open, all fetched and close.
其他应用程序(例如视频编码)如果是耗时非常长的操作，最好以“批处理”任务的方式运行，此时启动一个作业，让其一直运行，然后我们就可以去干别的事情了。
Other applications, such as video encoding, are lengthy operations that are best run "batch" style, where you start a job and leave it running while you go do something else.
大多数情况下，安装过程耗时不超过45分钟，新操作系统运行的顺畅良好。
In most cases, the installation took 45 minutes or less, and the new operating system worked snappily and well.
再现这些互操作性环境可能非常耗时，并且通常需要其他供应商产品的知识。
Reproducing these interoperability environments can be time consuming and often requires knowledge of other vendors' products.
如果使用SQLGetDataAPI，涉及lob列的联邦选择操作在DB 2昵称上的耗时比在底层DB 2基本表上的耗时同样长大约25%。
Federated select operations involving LOB columns are also about 25% longer against DB2 nicknames than against the underlying DB2 base tables if the SQLGetData API is used.
复制文件(尤其是通过网络)会非常耗时，因此首先要考虑消除或尽最大限度减少的就是复制操作的数量。
Copying a file, especially over a network, can be time consuming, so one of the first items to eliminate or minimize is the number of copy operations. This can be accomplished in a few ways.
它给出了在一个时间窗口内所有的ActiveRecord操作，并且允许你使用一些标准对这些操作进行排序，例如总消耗时间、平均时间和吞吐时间等等。
It shows all the ActiveRecord operations for a selected time window and allows you to sort them using several metrics including total time consumed, average time, and throughput time.
若吹灰器完成吹灰循环耗时过长，吹灰器操作耗时功能应能报警并终止吹灰器程序。
Blower operation elapsed time functions, to alarm and stop blower sequence if a sootblower takes excessive time to complete its blowing cycle.
重要的是，算法保证在一系列的操作之后，耗时昂贵的操作时间被分摊，从而使整改操作的时间复杂度为O（1）。
What is important is that the algorithm guarantees that after a sequence of operations the expensive operations will be amortised and thereby rendering the entire operation O(1).
传统的有机物样品分析前处理方法主要有液-液萃取、固相萃取等方法，这些方法具有耗时长、操作繁琐、且需要大量有机溶剂等缺点。
Conventional organic sample preparation methods, such as liquid-liquid extraction and solid phase extraction, are time and solvent consuming, and often involve several complicated procedures.
模拟法通常用于无法进行实际测量，操作十分困难，耗时长或价格昂贵的测量。
The analogy method is most often used when measurements of the actual object are not possible, extremely difficult, time consuming or costly.
操作程序复杂、耗时长。
传统的检测技术存在破坏样品、成本高、耗时长、操作复杂、无法实现在线分析等缺点。
Traditional measurement technology has shortcoming of destroying samples, high cost, wasting time, complex operation and offline analysis.
在对其进行计量和检定的过程中，由于操作复杂，需要测试的参数多，手动测试相当耗时耗力。
Because of the complex operation and lots of the measuring items, traditional methods of measurement and calibration of spectrum analyzer are time-consuming and effort-consuming.
方法执行耗时的操作。
关于这个软件的最好的事情是，它可以节省耗时的日常的操作，你并让你把你的创意能量。
The best thing about this software is that it saves you from time-consuming routine operations and lets you put your energy into creativity.
测试结果对比表明，该仪器准确度高、操作简单、耗时较少。
The results shows that this instrument is convenient and simple in operation and less time-consuming.
空间连接运算是空间数据库中的一种基本操作，但它也是最复杂、最耗时的操作之一。
Spatial join is one of the most complex and time-consuming operations in spatial database systems.
空间连接运算是空间数据库中的一种基本操作，但它也是最复杂、最耗时的操作之一。
Spatial join is one of the most complex and time-consuming operations in spatial database systems.
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