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calcru-negative-runtime has been fixed for years

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Noted by:	imp
Approved by:	bcr (mentor)
This commit is contained in:
Eitan Adler 2012-12-17 20:42:20 +00:00
parent 0775d12660
commit a711851f53
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=40409
1 changed files with 0 additions and 31 deletions
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en_US.ISO8859-1/books/faq/book.xml
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@ -2898,37 +2898,6 @@ chip1@pci0:31:5: class=0x040100 card=0x00931028 chip=0x24158086 rev=0x02
</answer>
</qandaentry>
<qandaentry>
<question id="calcru-negative-runtime">
<para>Why are <errorname>calcru: negative runtime</errorname>
or <errorname>calcru: runtime went backwards</errorname>
messages pounding the console?</para>
</question>
<answer>
<para>There is a known problem when enabling &intel; Enhanced
SpeedStep from the BIOS: it causes the kernel to start printing
<errorname>calcru</errorname> messages like this:</para>
<screen>calcru: runtime went backwards from 6 usec to 3 usec for pid 37 (pagezero)
calcru: runtime went backwards from 6 usec to 3 usec for pid 36 (vmdaemon)
calcru: runtime went backwards from 170 usec to 138 usec for pid 35 (pagedaemon)
calcru: runtime went backwards from 553 usec to 291 usec for pid 15 (swi6: task queue)
calcru: runtime went backwards from 15521 usec to 10366 usec for pid 2 (g_event)
calcru: runtime went backwards from 25 usec to 12 usec for pid 11 (swi1: net)
calcru: runtime went backwards from 4417 usec to 3960 usec for pid 1 (init)
calcru: runtime went backwards from 2084385 usec to 1793542 usec for pid 1 (init)
calcru: runtime went backwards from 408 usec to 204 usec for pid 0 (swapper)</screen>
<para>It is because &intel; SpeedStep (EIST) is incompatible
with some motherboards.</para>
<para>Workaround: Disable the EIST feature in the BIOS. You
can still achieve ACPI-based processor frequency throttling
by using &man.powerd.8;.</para>
</answer>
</qandaentry>
<qandaentry>
<question id="computer-clock-skew">
<para>Why does the clock on my computer keep incorrect time?</para>