We monitor our website's homepage using websitepulse.com. They provide a detailed breakdown of the steps for fully downloading our homepage.
I am seeing somewhat high variance in DNS lookup time. It can take anywhere between 200ms to 2 seconds.
Our domain has three nameservers:
mimas.rh.com.tr janus.radore.com titan.radore.com
I am wondering if one of these nameservers is performing poorly.
How do I go about checking this? I figure, if I remove the bad performing nameserver from our domain information, I can reduce the dns lookup variance.
XXXXXXXXXXX UPDATE: Is this a valid way of checking nameserver response times?
#dig ns sample.com @mimas.rh.com.tr #dig ns sample.com @janus.radore.com #dig ns sample.com @titan.radore.com
These commands output query response times. Is this what I am looking for?