Re: getaffinity/setaffinity and cpu sets.

On Thu, Feb 21, 2008 at 09:27:41AM +0000, Robert Watson wrote:

- You don't mention what happens if a process's cpu set changes to preclude a
CPU the process has a thread with affinity for. Online, you suggested
SIGKILL, and I thought maybe a new SIGCPUGONE with a default SIGKILL action
might be a friendlier model. We should see what Solaris and others do here
though. I like the idea that the affinity is a guarantee in userspace
because it means that you can rely on it; I'm OK with the idea that your
thread always runs on the CPUs you have affinity for unless in the
SIGCPUGONE handler :-).

If a processor set disappears from under a process on Solaris, the
process gets moved to the "default" set (or, in other words, they aren't
in a set any more).

Ceri
--
That must be wonderful! I don't understand it at all.
-- Moliere

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