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-rw-r--r-- 1 ahu ahu 12918 2006-03-18 23:51 /var/www/caches-week.png |
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<h1>PowerDNS Recursor Performance Graphs</H1> |
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<table border=1> |
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<tr><td>Questions</td><td>End-user initiated DNS questions</td></tr> |
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<tr><td>Out-queries</td><td>Recursor initiated questions to other |
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nameservers</td></tr> |
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<tr><td>Throttled</td><td>If a certain nameserver is not responding, or if |
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it is, but returning unuseful answers, it is not useful to keep repeating |
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identical queries. If PowerDNS prevents a duplicate query, and therefore |
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prevents needless server load and delays, this is called a 'throttled |
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out-query'</td></tr> |
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<tr><td>Outgoing timeout</td><td>An out-query that did not generate an |
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answer within 1 or 2 seconds</td></tr> |
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<tr><td>Noerror answer</td><td>A Question that was answered without an error |
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status</td></tr> |
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<tr><td>NXDOMAIN answer</td><td>A Question that was answered with a positive |
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indication that there is no answer</td></tr> |
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<tr><td>SERVFAIL answer</td><td>No answer could be given because the nameservers |
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carrying the answer did not respond, or were throttled</td></tr> |
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<tr><td>Cache hits/misses</td><td>A query is judged a cache-hit if it could |
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be answered without generating any out-queries</td></tr> |
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<tr><td>User/System CPU usage</td><td>Actual amount of CPU used exclusively |
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by the recursor, either in user or in system (kernel) mode</td></td> |
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</table> |
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<img src="latencies-week.png"> |
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<br> |
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<img src="qa-latency-week.png"> |
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<br> |
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<img src="qoutq-week.png"> |
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<br> |
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<img src="timeouts-week.png"> |
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<br> |
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<img src="questions-week.png"> |
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<br> |
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<img src="tcp-questions-week.png"> |
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<br> |
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<img src="caches-week.png"> |
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<br> |
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<img src="caches2-week.png"> |
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<br> |
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<img src="load-week.png"> |
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<br> |
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<img src="hitrate-week.png"> |
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<br> |
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<img src="packet-errors-week.png"> |
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</body> |
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</html> |