Re: [gentoo-user] Would constant max CPU speed cause lockups?

[Dottie Keogh]

Have you ran memtest? 


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On Saturday, June 5, 2021, 5:21 PM, Michael <confabulate@××××××××.com> wrote:

On Saturday, 5 June 2021 18:37:26 BST tastytea wrote:
> On 2021-06-05 13:18-0400 "Walter Dnes" <waltdnes@××××××××.org> wrote:
> >  A few years ago, I cheaped out and bought a low-powered Atom desktop
> >
> > with 8 gigs of RAM.  Looking back, that was a mistake.  It would
> > default to 480p or at best 720p on Youtube.  But I wrote a nifty bash
> > script that manually put the CPU into "userspace" mode, and selected
> > the maximum available CPU speed.  I finally got Youtube with steady
> > playback at 1080p... YAY!  I'd leave it at max speed during my waking
> > hours, and drop it to min speed at night before going to bed.
> >
> >  I saw the occasional mysterious lockups as I mentioned in recent
> >
> > threads.  I wonder if pushing the CPU to max speed most of the day
> > would cause overheating and lockups.  I'm leaving my current, more
> > powerfull, machine in "conservative" mode.
>
> The CPU will automatically throttle when a certain temperature is
> reached. This may be the cause of the lockups.
>
> >  Should I stay in conservative mode?  Or forget about speed control
> >
> > entirely, and let "Intel Speed Step" handle things for me?  Also, is
> > there a way to enable CPU throttling based on temperature?
>
> Have you tried ondemand mode? It ramps up the speed faster than
> conservative mode and drops equally fast if there is not much to do. I
> have it enabled everywhere and didn't notice any problems.

If thermal throttling takes place there will be entries in dmesg and syslog to 
this effect.