On 16/03/10 02:23 +0100, Marc Lehmann wrote:
On Mon, Mar 15, 2010 at 11:07:53PM +0000, James Mansion
<[email protected]> wrote:
Yes, threads were not meant for these kinds of workloads, and their
overheads are enourmous even on systems that are very fast (such as
GNU/Linux).
That is not necessarily so: a spinlock-protected FIFO is hardly an
enormous overhead, and in lightly loaded systems the added latency
of passing control is neither here nor there in most cases, while an
userspace thread switching is 10-100 times faster than kernel thread
switching on my GNU/Linux box - and processes don't need to communicate
with themselves via slow main memory (they can use cache).
Marc,
Can you provide more information on userspace thread switching?
Do you have any good links that explain this model?
Thanks,
--
Dan White
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