Re: Celeron J3160 with enabled Turbo mode stays at 480MHz(lowestsetting) forever and can not lower frequency without Tuebo mode

From: Lev Serebryakov <lev_at_FreeBSD.org>
Date: Thu, 6 Sep 2018 14:32:29 +0300
On 06.09.2018 4:15, Benjamin Kaduk wrote:

> Okay, "system openssl" and the FreeBSD version is enough to nail down the
> code and configuration, and I see the processor type is in the subject
> line.  I guess posting the CPU features bits from dmesg might save whoever
> tries to track down the codepaths being used some time (unless that was
> posted already and I missed it?).
 I'll post it tonight, but I don't think it is very openssl-specific or
thermal throttling. I've monitored temperatures, of course, and
monitored frequencies with turbostat. With Turbo enabled freuqnces jumps
wildly and were lower than with Turbo disabled. And anyway, even
frequencies jumps were not large enough to explain x3.5 difference.

 Another thing which puzzles me, that with Turbo disabled (!) I see
frequencies 2666MHz accroding to turbostat, which seems impossible, as
it is higher than official Turbo frequency (!). I don't know how to
explain this. Maybe, turbostat fails?


-- 
// Lev Serebryakov
Received on Thu Sep 06 2018 - 09:32:33 UTC

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