The performance improvement is due to the reduction of Translation Lookaside Buffer (TLB) misses, which occurs because the TLB can now map to a much larger virtual memory range.
性能之所以得到了改进，是因为提高了Translation Lookaside Buffer (TLB)的命中率，这是因为TLB可以映射到更大的虚拟内存范围。
Increasing the size of this buffer allows the system to map more virtual memory, which results in a lower miss rate for applications that use a lot of virtual memory like Oracle.
增加这个缓冲区的大小允许系统映射更多的虚拟内存，其结果是使得使用大量虚拟内存的应用程序(如Oracle)的缺页率更低。
Existing tablespace can now be altered to map to buffer pool bp1. The following example maps the emp tablespace to buffer pool bp1.
现在就可以更改当前的表空间以映射缓冲池bp1。
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