On May 22, 2005, at 11:35 AM, Craig Blake wrote:
I was discussing this recently and the view was put that really
this level of scalability was probably not worth the various
sacrifices associated with the approach (our load balancing leaves
something to be desired, for example). So as far as I know, most
VMs these days just rely on posix style threads. Of course in
that case your scalability will largely depend on your underlying
kernel threads implementation.
Whether or not it's worth it depends on your needs. The lack of a
highly scalable threading model in the current popular VMs is the
reason why we have to use alternative architectures (like SEDA) to
make truly scalable servers. Some of us would find it very
valuable. ;-)
It seems apparent that directly mapping to the underlying thread
system results in a VM that doesn't scale very well on any of the
common architectures including both MS and Linux, perhaps a
different approach would be better?
Seems to me that you might want to be open to either using the
platform's threading when a platform has good scalability, and punt
and do it in VM when the platform doesn't offer it.
geir
--
Geir Magnusson Jr +1-203-665-6437
[EMAIL PROTECTED]
