calcru: time went backwards
Pertti Kosunen
pertti.kosunen at pp.nic.fi
Fri Apr 18 15:01:08 UTC 2008
Larry Rosenman wrote:
> On Tue, 15 Apr 2008, Jeremy Chadwick wrote:
>> And what the FAQ doesn't cover is here:
>>
>> http://wiki.freebsd.org/JeremyChadwick/Commonly_reported_issues
>>
>> * EIST (Intel SpeedStep) incompatibilities with Supermicro PDSMI+
>> motherboards (and possibly others)
>> * Symptom: kernel outputs messages like kernel: calcru: negative
>> runtime of -XXXXX usec for pid XX
>> * Workaround: Disable the EIST feature in the BIOS. You can still
>> achieve ACPI-based processor
>> frequency throttling by using powerd(8).
>> * Reference:
>> http://lists.freebsd.org/pipermail/freebsd-questions/2006-October/133253.html
>>
> What I find interesting is I hadn't seen these until this kernel update :(
Same problem here with Tyan Toledo i3000R (S5191) motherboard if cpufreq
module is loaded.
7.0-RELEASE (AMD64) didn't have this problem.
More information about the freebsd-stable
mailing list