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。
If per-user quotas are being used, this value may be less than the total number of free bytes on a disk.
若用户磁盘配额被启用，该值可能小于总空闲空间容量。
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。
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。
The only thing we have to do to free memory is to take the pointer we're given, back up sizeof (struct mem_control_block) bytes, and mark it as available. Here is the code for that.
为了释放内存，我们必须要做的惟一一件事情就是，获得我们给出的指针，回退size of (struct mem_control_block)个字节，并将其标记为可用的。
Then, when they pass the pointer back via free , we simply back up a few memory bytes to find this structure again.
然后，当通过free将该指针传递回来时，我们只需要倒退几个内存字节就可以再次找到这个结构。
A block is allocated from the free pool by first converting the requested bytes to an index in the bucket array, using the following equation.
当从空闲池分配块时，首先使用以下公式把请求的字节数转换为bucket数组索引。
Statistics include a percentage of total memory utilized; bytes of total, used, and free memory; and of lesser interest in typical monitoring, request, XG4, and held memory.
统计信息中包括总的内存利用百分比；全部、已使用的和空闲的内存字节数；以及一些不太重要的监控数据，包括请求、XG4和占用内存。
It also specifies the available free space and total disk size, both specified in bytes.
它还指定了可用的自由空间和总磁盘大小，字节中指定。
The disk_free_space function returns the free space, in bytes, of the specified directory.
函数的作用是：返回指定目录的可用空间，以字节数表示。
An implementation is free to return fewer bytes than requested even if the end of the stream has not been reached.
即使尚未到达流的末尾，实现仍可以随意返回少于所请求的字节。
An implementation is free to return fewer bytes than requested even if the end of the stream has not been reached.
即使尚未到达流的末尾，实现仍可以随意返回少于所请求的字节。
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