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[Bug 438234] Re: move to HZ=100 on non-i386/lpia for efficiency...


This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
lucid' to 'verification-done-lucid'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

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** Tags added: verification-needed-lucid

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  move to HZ=100 on non-i386/lpia for efficiency...

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Karmic:
  Fix Released

Bug description:
  Upstream defaulted to HZ=100 to improve efficiency where highres
  timers are available; see benchmark at http://lwn.net/Articles/331607/

  To remain competitive, Ubuntu Karmic should consider where this is
  possible. At present, i386 and lpia often don't provide a HPET or such
  adequate timer, thus leave HZ=250 on these arches. The opportunity
  thus exists on other architectures.

  Further discussion at:

  Justification: keep Ubuntu Karmic competitive with other distros, and
  maximise user experience due to more efficiency

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