ts, 41 merged recs, 499 merges
Hash table size 3984403, node heap has 967 buffer(s)
14.66 hash searches/s, 64.65 non-hash searches/s
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LOG
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Log sequence number 27233311008
Log flushed up to 27233311008
Last checkpoint at 27233310593
0 pending log writes, 0 pending chkp writes
37848626 log i/o's done, 1.00 log i/o's/second
size: The number of pages used within the change buffer. Change buffer size is equal to seg size - (1 + free list len). The 1 + value represents the change buffer header page.
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free list len: The number of pages free within the change buffer.代表了空闲页的数量
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seg size: The size of the change buffer, in pages. 插入缓冲的大小为2 *16KB
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merges: The total number of change buffer merges.表示合并次数
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merged operations - insert: The number of inserted records merged.merged插入的记录数
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merged operations - delete mark: The number of deleted records merged.merged删除记录数
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merged operations - delete: The number of purge records merged.merged清除记录数
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discarded operations - insert: The number of insert merge operations discarded.
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discarded operations - delete mark: The number of delete merge operations discarded.
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discarded operations - delete: The number of purge merge operations discarded.