但这也是有代价的，那就是增加了写延迟，同时API中的一致性保证也发生了变化。
This was achieved at the expense of increased latency for writes and changes in consistency guarantees in the API.
通过延迟分配，XFS赢得了许多机会来优化写性能。
By delaying allocation, XFS gains many opportunities to optimize write performance.
该延迟可以有助于减少与写日志记录相关的数据库管理器开销。
This delay can help reduce the database manager overhead associated with writing log records.
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