Trace Buffer was widely applied in recording the historical track in the period of the programs ' execution . And this convenience is used in many kinds of In-circuit Emulators and Oscilloscopes .

跟踪 缓冲可以记录程序执行的历史轨迹，这在各种在线仿真器（ICE）和逻辑分析仪中得到了广泛的应用。

For performance reasons the trace facility does not allow you to change the trace buffer size dynamically .

由于性能的原因，跟踪功能不允许动态更改 跟踪 缓冲 区的大小。

If you are tracing to shared memory the size of the trace buffer controls the size of the dump file .

如果是在跟踪共享内存， 跟踪 缓冲 区的大小将控制转储文件的大小。

Trace commands mentioned at the beginning of this topic automatically open trace buffer .

在这个话题的开始提到的跟踪命令自动打开 跟踪 缓冲 区。

There are some important things that you should note about the trace buffer

关于 跟踪 缓冲 区，以下有些重要的事情需要注意

Collection options include turning a trace on or off ; specifying the trace buffer size ; specifying or changing trace options ; dumping a trace ; and clearing the trace buffer .

收集选项包括打开或关闭跟踪；指定 跟踪 缓冲 区大小；指定或更改跟踪选项；转储跟踪信息；以及清除跟踪缓冲区。

In this case we will trace only the buffer pool services component .

在本例中，我们将只 跟踪 缓冲池服务组件。

As long as there is a single process attached to the shared trace buffer you will not be able to change the buffer size .

只要共享 跟踪 缓冲 区上附加了一个进程，就不能更改缓冲区的大小。

Notice that displayed count is dynamical and doesn 't account for the old commands discarded from the trace buffer .

注意显示出来的数字是动态的，而且不对已经从 跟踪 缓冲 区中丢弃的指令镜像。

First we will turn the trace facility on specifying an8-MB trace buffer .

首先，我们将打开跟踪功能，同时指定一个8-MB的 跟踪 缓冲 区。

Trace buffer doesn 't save top of stack or contents of memory referenced by registers .

跟踪 缓冲 区并不保存栈顶或由寄存器所指向的内存的内容。

Design for Trace Buffer in Embedded System

嵌入式处理器中 跟踪 缓冲的设计考虑

This allocation allows the thread to continue to run while a full trace buffer is written to the filesystem .

当一个 跟踪 缓冲 区满了时，将它写到文件系统中，这使线程能够连续运行。

The default size for each trace buffer is five Megabytes but this can be overridden when you run the Tprof tool .

每个 追踪 缓冲 区默认的大小是5MB，不过，当您运行Tprof工具时可以覆盖这一默认值。