Re: [HACKERS] Threads

[mlw]

Greg Copeland wrote:

On Thu, 2003-01-23 at 09:12, Steve Wampler wrote:
  

On Sat, 4 Jan 2003, Christopher Kings-Lynne wrote:
    

Also remember that in even well developed OS's like FreeBSD, all a
process's threads will execute only on one CPU.
      

I doubt that - it certainly isn't the case on Linux and Solaris.
A thread may *start* execution on the same CPU as it's parent, but
native threads are not likely to be constrained to a specific CPU
with an SMP OS.
    

You are correct.  When spawning additional threads, should an idle CPU
be available, it's very doubtful that the new thread will show any bias
toward the original thread's CPU.  Most modern OS's do run each thread
within a process spread across n-CPUs.  Those that don't are probably
attempting to modernize as we speak

AFAIK, FreeBSD is one of the OSes that are trying to modernize. Last I looked it did not have kernel threads.