On Thu, 2018-11-15 at 14:59 +0000, Patrick O'Callaghan wrote:
On Thu, 2018-11-15 at 20:05 +0800, Ed Greshko wrote:
> On 11/15/18 6:52 PM, Patrick O'Callaghan wrote:
> > On Wed, 2018-11-14 at 15:58 +0000, Patrick O'Callaghan wrote:
> > > On Wed, 2018-11-14 at 20:27 +0800, Ed Greshko wrote:
> > > > Oh, and I guess, one other thing.
> > > >
> > > > How about creating a new user and leave that vanilla user logged in
over night?
> > > Yes, that's about all I can think of for now.
> > I did that and it froze within about 20 minutes of logging in. This was
> > in a parallel session while I continued working in my main session.
> > That test session has nothing else running and is still frozen after
> > about 18 hours.
> >
> > Meanwhile my normal session was frozen for a few minutes when I came
> > back this morning but has since woken up spontaneously.
> >
> > All this is with the NFS NAS automounted but not being used.
> >
> I think I would use that term "not being used" lightly.
>
> I only use NFSv4 and I am currently not reading or writing to the NAS. However, in
> looking at network traffic with wireshark I see my system sending periodic TCP
Keep-Alive
> packets as well as NFS Renew CID packets. I would guess NFSv3 do do similar.
The NAS spins down when not being used, though I guess it could still
respond to this kind of thing.
> That said, I don't see how those interactions would cause Plasma Freeze.
Indeed not. Unless Plasma is for some reason checking all filesystems,
but I don't think it's that stupid.
I'm running strace on the plasmashell process to see if anything jumps
out when it freezes/unfreezes.
Just an update in case anyone is wondering: I haven't had a freeze in
several days now, since updating to kernel 4.19.2. Go figure ...
poc
PS Of course I soon as I send this I'll no doubt get a freeze. Such is
the Law of Murphy.