Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH] Prevent users from disabling tickless | Date | Wed, 22 Dec 2010 01:38:07 +0100 |
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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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