[Bug 192315] high load average while idle, slow keyboard reaction

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=192315

Alexander Motin <mav at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |mav at FreeBSD.org

--- Comment #1 from Alexander Motin <mav at FreeBSD.org> ---
Line "Event timer "LAPIC" quality 400" in verbose dmesg tells that LAPIC timer
in your CPU (used by default) is not compatible with CPU C-states (deep idle
states). Can you make sure that C-states are not used on your system by
checking 'sysctl dev.cpu | grep cx_usage' and 'sysctl -a | grep cx_lowest'?

Timer code was not changing for quite some time already, while C-states were
enabled by default less time ago, IIRC.

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