此类别内的系统计数器跟踪内存数据，如可用字节数和缓存的字节数。
System counters within this category track memory data such as the number of bytes available and the number of bytes cached.
此类别内的系统计数器跟踪内存数据，如可用字节数和缓存的字节数。
System counters within this category track memory data such as the number of bytes available and the number of bytes cached.
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