<html> <body> <!-- -rw-r--r-- 1 ahu ahu 12918 2006-03-18 23:51 /var/www/caches-day.png -rw-r--r-- 1 ahu ahu 13174 2006-03-18 23:51 /var/www/load-day.png -rw-r--r-- 1 ahu ahu 12728 2006-03-18 23:51 /var/www/qoutq-day.png -rw-r--r-- 1 ahu ahu 12939 2006-03-18 23:51 /var/www/questions-day.png -rw-r--r-- 1 ahu ahu 12913 2006-03-18 23:51 /var/www/timeouts-day.png --> <h1>PowerDNS Recursor Performance Graphs</H1> <table border=1> <tr><td>Questions</td><td>End-user initiated DNS questions</td></tr> <tr><td>Out-queries</td><td>Recursor initiated questions to other nameservers</td></tr> <tr><td>Throttled</td><td>If a certain nameserver is not responding, or if it is, but returning unuseful answers, it is not useful to keep repeating identical queries. If PowerDNS prevents a duplicate query, and therefore prevents needless server load and delays, this is called a 'throttled out-query'</td></tr> <tr><td>Outgoing timeout</td><td>An out-query that did not generate an answer within 1 or 2 seconds</td></tr> <tr><td>Noerror answer</td><td>A Question that was answered without an error status</td></tr> <tr><td>NXDOMAIN answer</td><td>A Question that was answered with a positive indication that there is no answer</td></tr> <tr><td>SERVFAIL answer</td><td>No answer could be given because the nameservers carrying the answer did not respond, or were throttled</td></tr> <tr><td>Cache hits/misses</td><td>A query is judged a cache-hit if it could be answered without generating any out-queries</td></tr> <tr><td>User/System CPU usage</td><td>Actual amount of CPU used exclusively by the recursor, either in user or in system (kernel) mode</td></td> </table> <img src="latencies-day.png"> <br> <img src="qa-latency-day.png"> <br> <img src="qoutq-day.png"> <br> <img src="timeouts-day.png"> <br> <img src="questions-day.png"> <br> <img src="tcp-questions-day.png"> <br> <img src="caches-day.png"> <br> <img src="caches2-day.png"> <br> <img src="load-day.png"> <br> <img src="hitrate-day.png"> <br> <img src="cpuload-day.png"> <br> <img src="packet-errors-day.png"> <br> <img src="limits-day.png"> </body> </html>