<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><tableborder=1><tr><td>Questions</td><td>End-user initiated DNS questions</td></tr><tr><td>Out-queries</td><td>Recursor initiated questions to othernameservers</td></tr><tr><td>Throttled</td><td>If a certain nameserver is not responding, or ifit is, but returning unuseful answers, it is not useful to keep repeatingidentical queries. If PowerDNS prevents a duplicate query, and thereforeprevents needless server load and delays, this is called a 'throttledout-query'</td></tr><tr><td>Outgoing timeout</td><td>An out-query that did not generate ananswer within 1 or 2 seconds</td></tr><tr><td>Noerror answer</td><td>A Question that was answered without an errorstatus</td></tr><tr><td>NXDOMAIN answer</td><td>A Question that was answered with a positiveindication that there is no answer</td></tr><tr><td>SERVFAIL answer</td><td>No answer could be given because the nameserverscarrying 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 couldbe answered without generating any out-queries</td></tr><tr><td>User/System CPU usage</td><td>Actual amount of CPU used exclusivelyby the recursor, either in user or in system (kernel) mode</td></td></table><imgsrc="latencies-day.png"><br><imgsrc="qa-latency-day.png"><br><imgsrc="qoutq-day.png"><br><imgsrc="timeouts-day.png"><br><imgsrc="questions-day.png"><br><imgsrc="tcp-questions-day.png"><br><imgsrc="caches-day.png"><br><imgsrc="caches2-day.png"><br><imgsrc="load-day.png"><br><imgsrc="hitrate-day.png"><br><imgsrc="packet-errors-day.png"></body></html>