ASP.net session request queuing -

it seems me asp.net queues requests use same session id. let's you've got 3 pages.

default.aspx

protected void page_load(object sender, eventargs e) {     session["asdf"] = "lolz"; } 

hitting page create new session if 1 doesn't exist.

x-aspnet-version: 2.0.50727 set-cookie: asp.net_sessionid=ibjphuv0aiafqi453tyze345; path=/; httponly 

then hit hang.aspx

protected void page_load(object sender, eventargs e) {     thread.sleep(10000); } 

and after hit other page session id passed to, doesn't matter if anything, let's call test.aspx.

the sequence loading so.

request            timeline "get /"            |*| "get /hang.aspx"       |******************************************| "get /test.aspx"            |**************************************| 

i guess question how disable feature. understand it's useful have session state can more predictable, in case long running reports page load killing users' ability multitask.

this behaviour design; no concurrent access session state allowed. requests same sessionid locked exclusively prevent potential corruption of state.

to around can disable session state in page directive.

<%@ page enablesessionstate="false" %> 

read "concurrent requests , session state" here http://msdn.microsoft.com/en-us/library/ms178581.aspx more.

setting enablesessionstate="readonly" prevent page gaining exclusive lock on sessionstate (but page have wait other non-readonly requests user finish before loading).

(this copy , paste of answer question asp.net site: long-loading page user puts other page loads user on hold)