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10 <h1>PowerDNS Recursor Performance Graphs</H1> |
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11 <table border=1> |
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12 <tr><td>Questions</td><td>End-user initiated DNS questions</td></tr> |
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13 <tr><td>Out-queries</td><td>Recursor initiated questions to other |
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14 nameservers</td></tr> |
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15 <tr><td>Throttled</td><td>If a certain nameserver is not responding, or if |
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16 it is, but returning unuseful answers, it is not useful to keep repeating |
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17 identical queries. If PowerDNS prevents a duplicate query, and therefore |
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18 prevents needless server load and delays, this is called a 'throttled |
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19 out-query'</td></tr> |
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20 <tr><td>Outgoing timeout</td><td>An out-query that did not generate an |
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21 answer within 1 or 2 seconds</td></tr> |
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22 <tr><td>Noerror answer</td><td>A Question that was answered without an error |
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23 status</td></tr> |
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24 <tr><td>NXDOMAIN answer</td><td>A Question that was answered with a positive |
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25 indication that there is no answer</td></tr> |
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26 <tr><td>SERVFAIL answer</td><td>No answer could be given because the nameservers |
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27 carrying the answer did not respond, or were throttled</td></tr> |
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28 <tr><td>Cache hits/misses</td><td>A query is judged a cache-hit if it could |
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29 be answered without generating any out-queries</td></tr> |
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30 <tr><td>User/System CPU usage</td><td>Actual amount of CPU used exclusively |
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31 by the recursor, either in user or in system (kernel) mode</td></td> |
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32 </table> |
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33 <img src="latencies-day.png"> |
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34 <br> |
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35 <img src="qa-latency-day.png"> |
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36 <br> |
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37 <img src="qoutq-day.png"> |
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38 <br> |
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39 <img src="timeouts-day.png"> |
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40 <br> |
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41 <img src="questions-day.png"> |
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42 <br> |
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43 <img src="tcp-questions-day.png"> |
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44 <br> |
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45 <img src="caches-day.png"> |
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46 <br> |
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47 <img src="caches2-day.png"> |
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48 <br> |
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49 <img src="load-day.png"> |
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50 <br> |
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51 <img src="hitrate-day.png"> |
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52 <br> |
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53 <img src="packet-errors-day.png"> |
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54 |
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55 </body> |
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56 </html> |