Does anyone know how many concurrent connections IE 9 allows while in other browser modes?
Since I'm asking, how concurrent connections do all IE browsers and other the top browsers have?
Actually having issues in Chrome, i think its a concurrency problem, someone suggested that it should happen in IE& as well, but i do not have IE7 installed. I did try it in IE9 set to IE7 browser mode, and it worked. SO was wondering if IE7 mode was using IE9's concurrent connection?
IE8 and IE9 have 6 concurrent connections on broadband. IE10 has 8 concurrent connections.
The above poster is correct, IE9 has similar behaviour to IE8; IE9 allows 6 concurrent connections, except when on VPN or dialup, in which case it allows two.
A good overview of the state of affairs is at http://www.browserscope.org/?category=network under the Connections per Hostname column.
来源：https://stackoverflow.com/questions/8522789/how-many-concurrent-connection-does-ie9-have-while-in-ie7-mode