Hi,
I'm running into an issue with the Firebug net panel giving what seems
to be incorrect timings. What seems to be happening is that places
where it seems that it's blocking, it's showing it as DNS requests.
It's best shown in an example:
http://gtmetrix.com/reports/www.thestudentroom.co.uk/x6PUgJMn/harviewer?url=http://gtmetrix.com/reports/www.thestudentroom.co.uk/x6PUgJMn/net.harp&expand=true
All the requests to static.thestudentroom.co.uk look like they're
blocking from the connection limit, but they show up as DNS lookups.
However, blocking connections do work, for example, using cuzillion:
http://gtmetrix.com/reports/stevesouders.com/qJFG9jpO/harviewer?url=http://gtmetrix.com/reports/stevesouders.com/qJFG9jpO/net.harp&expand=true
correctly shows the last 2 connections as blocking, but then the DNS
lookup time looks a little high. Even if we retest (where the DNS
request should be cached), it still shows a 544ms time for the DNS lookup.
GTmetrix currently uses:
Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.2.10)
Gecko/20100914 Firefox/3.6.10
Firebug 1.5.4
NetExport 0.8b8
Though I have also tested on:
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.12)
Gecko/20101026 Firefox/3.6.12
Firebug 1.5.4
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100920
Gentoo Firefox/3.6.9
Firebug 1.7X.0a4
Adrian
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