Forgot to say: yes, I was seeing those (occasional) hpet messages also,
so might be worth trying hpet=disable appended to the kernel command
line and seeing how this affects the performance under 2.6.32-21. hpet
on some machines can apparently cause problems with dynticks due to
buggy hardware.
** Also affects: linux
Importance: Undecided
Status: New
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[Lucid] Poor scrolling performance in browser (Firefox and Chrome, possibly
others)
https://bugs.launchpad.net/bugs/562293
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