* TREE01 rcutorture writer stalls?
@ 2020-12-16 5:04 Paul E. McKenney
2020-12-16 13:01 ` Frederic Weisbecker
0 siblings, 1 reply; 2+ messages in thread
From: Paul E. McKenney @ 2020-12-16 5:04 UTC (permalink / raw)
To: frederic; +Cc: linux-kernel
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Hello, Frederic,
Are you seeing rcutorture writer stalls? Please see attached for an
example from testing, search for "Call Trace". I am running an overnight
test, which should get me some idea of frequency. My thought is to run
on the same version, but without the rcutorture.nocbs_nthreads=0 and
rcutorture.nocbs_toggle=1000 kernel boot parameters.
This sort of error can occur when grace periods are progressing, but
callback processing is not. Things do seem to recover.
Other thoughts?
Thanx, Paul
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: TREE01 rcutorture writer stalls?
2020-12-16 5:04 TREE01 rcutorture writer stalls? Paul E. McKenney
@ 2020-12-16 13:01 ` Frederic Weisbecker
0 siblings, 0 replies; 2+ messages in thread
From: Frederic Weisbecker @ 2020-12-16 13:01 UTC (permalink / raw)
To: Paul E. McKenney; +Cc: linux-kernel
On Tue, Dec 15, 2020 at 09:04:07PM -0800, Paul E. McKenney wrote:
> Hello, Frederic,
>
> Are you seeing rcutorture writer stalls? Please see attached for an
> example from testing, search for "Call Trace". I am running an overnight
> test, which should get me some idea of frequency. My thought is to run
> on the same version, but without the rcutorture.nocbs_nthreads=0 and
> rcutorture.nocbs_toggle=1000 kernel boot parameters.
>
> This sort of error can occur when grace periods are progressing, but
> callback processing is not. Things do seem to recover.
>
> Other thoughts?
Ok I'm trying to reproduce that.
Thanks.
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