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

Andrew Morton
2006-11-24T08:16:21Z

On Fri, 24 Nov 2006 01:48:32 +0100
Eric Dumazet <dada1@cosmosbay.com> 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.