Functions are free to use the 288 bytes that are physically below the stack pointer for functions that do not call other functions.

函数可以自由使用288字节的内存，对于不调用其他函数的函数来说，这段内存物理上在堆栈指针之下。

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The number of free bytes in the cache can be found at bottom.

可以在底部找到缓存中的空闲字节数。

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states how many bytes were freed during the GC cycle; in this case, the JVM was able to free 218620376 bytes.

表明在此 GC 循环期间，有多少字节被释放，在本例中，JVM 能够释放 218620376 字节。

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