Thread question

Hi

I have a question about threads. I was wondering about what realy 
happens to a thread on the OS level when i set it to read from a socket 
when there is no data there. I use Native threads (not green threads).

Will the thread realy sleep, no contex switch will be done. The thread 
will sleep until a the OS get a interruption from the NIC.

or will thread contex switching still be done to see if there is data to 
be read.

I have an application that should handle alot (>10 000) connection at 
the same time but usally no traffic. Is the best way to make a  thread 
pool or  is the best way to have 1 thread per connection. If no contex 
switching will be done I don't see why not.

Best regard

/daniel


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