Use one buffer pool, but increase its size until the index hit ratio stops increasing.

使用一个缓冲池，但是增加其大小直至索引命中率停止增长。

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This collection option stops tracing on demand; all processes suspend tracing, but the contents of the trace buffer are preserved so that they can be dumped later.

这是一个收集选项，它根据需要停止跟踪。这时，所有进程都挂起跟踪，但跟踪缓冲区的内容被保存起来，以便以后转储到文件中。

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