1. top -SH -s .3 points me that stutters arrive once process changing its state
from 'idle' to 'active' with related disk activity.
2. Any machine with 6.6 GENERIC.MP affected.
2.1. 4-core AMD GX-420CA SOC - stutters more visible;
2.2. 2-core Intel i7-2640m - very rare stutters when process changing its
state from 'idle' to 'active'.
3. GENERIC (no MP) - stutters are minimal, after 48 hours I can see them very,
very rare and on AMD SOC only.
Martin
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Saturday, March 28, 2020 7:45 PM, Martin <[email protected]> wrote:
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Saturday, March 28, 2020 3:29 PM, Martin Pieuchot [email protected] wrote:
>
> > On 28/03/20(Sat) 09:33, Martin wrote:
> >
> > > After about a week of tests on freshly installed system i can conclude
> > > that two things affect on stutters 6.6 amd64 with all the patches
> > > included. To exclude hardware related problems I've changed AMD SOC PC to
> > > a new different one with the exactly the same configuration.
> >
> > What do you mean with "stutters"?
> > Could you run "top -SH -s .3" and describe what you seen what that
> > happens?
>
> I see stutters (continuous printing symbols from USB keyboard input, or mutt
> scrolling messages) when some processes changing from 'idle' to 'active' on
> processor. Some disk activity present. But I cant determine exact process
> which cause a stutter, the 'top' process combination is different when it
> happens.
>
> > Does those "stutters", or whatever you mean with that, are present
> > with GENERIC (non MP)?
>
> To check it I have to test the system with non MP kernel for about 24 hours
> when stutter will be 'visible' enough to describe it. Right after system boot
> the stutters have minimal duration and difficult to determine.
>
> Martin
