t_delta too short while trying to enable C3/TurboBoost

Alexander Motin mav at FreeBSD.org
Wed Apr 20 10:40:59 UTC 2011

Peter Lai wrote:
> I'm trying to enable C3 states to allow TurboBoost on RELENG_8_2 and
> dmesg is throwing a lot of t_delta too short messages while using boot
> -v.

Most likely you can safely ignore these messages. They are probably
result of the bug in checks that are not relevant any more. The bug
periodically triggered with some probability if HZ set lower then some
level. These checks were removed in 9-CURRENT.

Alexander Motin

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