ons. 23. jun. 2021 kl. 19:27 skrev Vincent Guittot :
>
> On Wed, 23 Jun 2021 at 18:55, Vincent Guittot
> wrote:
> >
> > On Wed, 23 Jun 2021 at 18:46, Sachin Sant
> > wrote:
> > >
> > >
> > > > Ok. This becomes even more weird. Could you share your config file and
> > > > more details about
> >
ons. 23. jun. 2021 kl. 15:56 skrev Vincent Guittot :
>
>
> The pelt value of sched_entity is synced with cfs and its contrib
> before being removed.
Hmm. Not sure what you mean by sched_entity here, since this is only
taking the "removed" load_avg
and removing it from cfs_rq, together with (remo
ons. 23. jun. 2021 kl. 14:22 skrev Vincent Guittot :
>
> In theory it should not because _sum should be always larger or equal
> to _avg * divider. Otherwise, it means that we have something wrong
> somewhere else
Yeah, that might be the case. Still trying to wrap my head around
this. I might be w
Hi,
Wouldn't the attached diff below also help when load is removed,
Vincent? Isn't there a theoretical chance that x_sum ends up at zero
while x_load ends up as a positive value (without this patch)? Can
post as a separate patch if it works for Sachin.
diff --git a/kernel/sched/fair.c b/kernel/
mit it as a patch:
Acked-by: Odin Ugedal
Odin
Hi,
Did some more research, and it looks like this is what happens:
$ tree /sys/fs/cgroup/ltp/ -d --charset=ascii
/sys/fs/cgroup/ltp/
|-- drain
`-- test-6851
`-- level2
|-- level3a
| |-- worker1
| `-- worker2
`-- level3b
`-- worker3
Timeline (i
man. 21. jun. 2021 kl. 12:57 skrev Sachin Sant :
>
> Unfortunately this does not help. I can still recreate the failure.
>
> Have attached the o/p from test run.
>
> Thanks
> -Sachin
Yes, thanks!
I am able to reproduce it locally now, so will keep looking to see if
I find the cause. Thanks!
Odin
man. 21. jun. 2021 kl. 11:50 skrev Vincent Guittot :
> This means that a child's load was not null and it was inserted
> whereas parent's load was null. This should not happen unless the
> propagation failed somewhere
My initial thought is that the patch below will fix it, if that is the
issue (th
man. 21. jun. 2021 kl. 08:33 skrev Sachin Sant :
>
> While running LTP tests (cfs_bandwidth01) against 5.13.0-rc7 kernel on a
> powerpc box
> following warning is seen
>
> [ 6611.331827] [ cut here ]
> [ 6611.331855] rq->tmp_alone_branch != &rq->leaf_cfs_rq_list
> [ 6611.33
