On Tue, 12 Oct 2010, Andi Kleen wrote:
> Thomas Gleixner <t...@linutronix.de> writes:
> > We have told HPC folks for years that we need a kind of "NOHZ" mode
> > for HPC where we can transparently switch off the tick when only one
> > user space bound thread is active and switch back to normal once this
> > thing terminates or goes into the kernel via a syscall. Sigh, nothing
> > happened ever except for repeating the same crap patches over and
> > over.
>
> Jan Blunck posted a patch for this exactly few months ago.
> Unfortunately it didn't get the accounting right, but other than
> that it seemed like a reasonable starting point.
Unfortunately it did not get a lot of other things right either.
Thanks,
tglx
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