High cpu temperature and fan when loading i195 kernel module
dillon at backplane.com
Mon Jun 12 08:39:00 PDT 2017
Note that those livelock thresholds are global, so they may mess up (slow
down greatly) disk I/O and network I/O too. I won't have time until July
to put together a workaround, but perhaps Sephe can extend his
kern.livelock_limit_hi feature into a kern.livelock_limit_lo feature that
is then flagged for the ACPI interrupt as a more permanent workaround.
On Mon, Jun 12, 2017 at 1:39 AM, Francois Tigeot <ftigeot at wolfpond.org>
> On Wed, May 17, 2017 at 08:58:26PM +0200, Luca Franchini wrote:
> > thank you for answering and for your work too. I'll will stay tuned for
> > next updates.
> Thanks Luca!
> With the help of dillon@, I noticed the first core of my Skylake laptop
> being pegged by acpi interrupts:
> [systat -pv 1 output]
> timer ipi extint user% sys% intr% idle% smpcol
> cpu0 238 11 25316 0.0 51.1 48.1 0.8 0
> [vmstat -i output]
> interrupt total rate
> acpi0 89216043 23348
> Setting a much lower treshold for misbehaving interrupts made the laptop
> usable. These are the sysctls I used:
> It's far from perfect though and power usage is still excessive; I'll try
> to learn more about the acpi subsystem in order to find out what exactly
> is going wrong here.
> Francois Tigeot
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