On Fri, Jan 13, 2017 at 8:26 AM, Jia-Shiun Li <jiash...@gmail.com> wrote:

> Hi all,
> since 2 or 3 weeks ago, I noticed that my old Penryn-based Intel Pentium
> T4200 notebook lagged a lot. System time was running a lot slower,
> sometimes even looked like it freezed. Keystroke repeat rate was slow too.
> Since system time is slow, I tried to change timecounter from default TSC
> to HPET. And it resumed normal immediately.
Did a binary search. Turns out it was caused by r310177 "Enable
EARLY_AP_STARTUP on amd64 and i386 kernels by default." r310175 does not
have this issue. Removing this option from kernel config also solves it.

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