What is meaning of 'Blocking' in Firebug Net Panel?

firefox firebug blocking
enerB picture enerB · Mar 23, 2010 · Viewed 31.8k times · Source

I'm using Firebug 1.5.2 and while testing a site before production release i can see a huge amount of time consumed by 'Blocking' parts of the requests.

What exactly does the 'Blocking' mean?

Answer

Maxym picture Maxym · Mar 24, 2010

"Blocking" previously (earlier versions of FireBug) was called "Queuing". It actually means that request is sitting in queue waiting for available connection. As far as I know number of persistent connections by default is limited in last versions of Firefox to 6, IE8 also 6. Earlier it was only 2. It can be changed by user in browser settings.
Also as I know that while javascript file is loading, all other resources (css, images) are blocked

Related questions

How can I inspect and tweak :before and :after pseudo-elements in-browser?

I have created some fairly elaborate DOM elements with an :after pseudo-element, and I'd like to be able to inspect and tweak them in either Chrome Inspector or Firebug or equivalent. Despite this feature being mentioned in this WebKit/Safari …

Read More
Firefox addon to view/edit/create localStorage data?

Is there an addon that allows you to view, edit, localStorage information? If there is and it works as an extension of Firebug I will be extremely happy. Something like Google Chrome's local storage similar to Firecookie but for the …

Read More
How can I inspect disappearing element in a browser?

How can I inspect an element which disappears when my mouse moves away? I don't know it's ID, class or anything but want to inspect it. Solutions I have tried: Run jQuery selector inside console $('*:contains("some text")') …

Read More