在DNS中的所有查询请求中，迭代查询所占的比例大于30%，因此服务器选择算法的性能对整个DNS服务器的整体性能有着非常大的影响。
Among all queries sent to DNS, the proportion of iterative query is larger than 30%, so the performance of server selection algorithm directly affects the performance of a DNS server.
在DNS中的所有查询请求中，迭代查询所占的比例大于30%，因此服务器选择算法的性能对整个DNS服务器的整体性能有着非常大的影响。
Among all queries sent to DNS, the proportion of iterative query is larger than 30%, so the performance of server selection algorithm directly affects the performance of a DNS server.
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