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DNS sensor too high ms

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Why the DNS sensor give me 317 ms when the ping sensor give me (min time 1ms) also the same with the smtp sensor arround 317 ms , is it not too high?

dns ping smtp

Created on Jan 10, 2011 5:08:28 PM by  weng (0) 1

Last change on Jan 11, 2011 8:59:02 AM by  Daniel Zobel [Product Manager]



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To the response time, PRTG (up to version 8.1.2.1810) for most sensors adds the time needed for DNS resolution. So, when adding a Ping sensor to a PRTG device whose host is a DNS name, the DNS resolution is part of the ping time. This behavior will be adjustable soon. Meanwhile, please use the IP address as host instead of a DNS name to get the Ping time without DNS resolution. The same is true for e.g. the SMTP sensor.

Created on Jan 11, 2011 9:05:40 AM by  Daniel Zobel [Product Manager]



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