Subj : Re: Futexes are wrong! (Are they?)
To   : comp.programming.threads
From : David Schwartz
Date : Mon Jun 13 2005 01:18 pm


"Jomu" <dragisha@gmail.com> wrote in message 
news:1118683254.093964.9310@z14g2000cwz.googlegroups.com...

>>     Just please, name two advantages of thread-per-client. I've named at
>> least six advantages of a thread pool.

>  1. You don't have to make 10,000 bit bitset for select() call on
> 10,000 fd's;

    If you want simplicity, you can use 'poll' with a thread pool. If you 
want the highest possible performance, you can use whatever provides the 
best performance on your OS.

>  2. Your kernel does not have to operate on (and nobody claimed it's
> been O(1)-ed) 10,000 bit bitset;

    Same answer.

    There is some ideal number of connections to 'poll' on. It's probably 
not one and it's probably not 10,000. With a thread pool, you can have your 
I/O threads 'poll' on the optimum number of sockets each.

    Try again.

    DS

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