Re: [take25 1/6] kevent: Description.

[Andrew Morton]

On Fri, 24 Nov 2006 01:48:32 +0100
Eric Dumazet <dada1@xxxxxxxxxxxxx> wrote:

> > The alternative is the sorry state we have now.  In nscd, for instance, 
> > we have one single thread waiting for incoming connections and it then 
> > has to wake up a worker thread to handle the processing.  This is done 
> > because we cannot "park" all threads in the accept() call since when a 
> > new connection is announced _all_ the threads are woken.  With the new 
> > event handling this wouldn't be the case, one thread only is woken and 
> > we don't have to wake worker threads.  All threads can be worker threads.
> 
> Having one specialized thread handling the distribution of work to worker 
> threads is better most of the time.

It might be now.  Think "commodity 128-way".  Your single distribution thread
will run out of steam.

What Ulrich is proposing is faster.  This is a new interface.  Let's design
it to be fast.

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