WebPagetest Forums
DNS Lookup explanation - Printable Version

+- WebPagetest Forums (https://www.webpagetest.org/forums)
+-- Forum: Web Performance (/forumdisplay.php?fid=3)
+--- Forum: Discuss Test Results (/forumdisplay.php?fid=4)
+--- Thread: DNS Lookup explanation (/showthread.php?tid=14456)

DNS Lookup explanation - Neurobion - 08-15-2016 07:29 PM

Hi everyone,

I have question about how exactly is measured DNS Lookup time in your test result. I don't understand why this number is too high. I did many different tests against Goggle NS and never have so bad response query time as you.

e.g. for:

Host: edge.quantserve.com
DNS Lookup: 495 ms

I don't have higher query time than 52ms (global maximum for that host for 27040 queries)
dig @ edge.quantserve.com


curl -w "@curl-format.txt" -o /dev/null -s edge.quantserve.com
with %{time_namelookup}

Your tests showed me 495ms, 84ms, 125ms,...

Thank you