统计状态说明
The Statistics File
The statistics file generated by BIND 9 is similar, but not identical, to that generated by BIND 8.
The statistics dump begins with a line, like:
+++ Statistics Dump +++ (973798949)
The number in parentheses is a standard Unix-style timestamp, measured as seconds since January 1, 1970. Following that line are a series of lines containing a counter type, the value of the counter, optionally a zone name, and optionally a view name. The lines without view and zone listed are global statistics for the entire server. Lines with a zone and view name for the given view and zone (the view name is omitted for the default view).
The statistics dump ends with the line where the number is identical to the number in the beginning line; for example:
— Statistics Dump — (973798949)
The following statistics counters are maintained:
| success | The number of successful queries made to the server or zone. A successful query is defined as query which returns a NOERROR response with at least one answer RR. |
| referral | The number of queries which resulted in referral responses. |
| nxrrset | The number of queries which resulted in NOERROR responses with no data. |
| nxdomain | The number of queries which resulted in NXDOMAIN responses. |
| failure | The number of queries which resulted in a failure response other than those above. |
| recursion | The number of queries which caused the server to perform recursion in order to find the final answer. |
Each query received by the server will cause exactly one of success, referral, nxrrset, nxdomain, or failure to be incremented, and may additionally cause the recursion counter to be incremented.
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