2004-06-14, h keltez�ssel 18:02-kor Daniel Malmkvist ezt �rta:
> 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
>
>
You shouldn't use blocking IO, if you really want so much concurrent
connections. I've never ever seen a native threading JVM, which were
able to manage thousands of threads (Due to limitations of linux kernels
2.4) So i advise you to use java.nio (non-blocking IO, with selectors)
BR
Zsombor
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