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SubjectRe: [PATCH] Prevent users from disabling tickless
Date
On Wednesday, December 22, 2010, Matthew Wilcox wrote:
> On Wed, Dec 22, 2010 at 12:46:23AM +0100, Rafael J. Wysocki wrote:
> > On Wednesday, December 22, 2010, Matthew Wilcox wrote:
> > >
> > > Disabling NO_HZ has a serious negative effect on performance -- an extra
> > > 70us per I/O. Prevent users from deselecting it.
> > >
> > > Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
> >
> > OTOH, it causes some systems to not work at all still. Sadly.
>
> It doesn't stop people from specifying nohz=off on the kernel command line.

Which still doesn't work for some people AFAICT.

Thanks,
Rafael


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