On Wed, 6 May 2020 07:41:51 -0700 "Paul E. McKenney" wrote:
> On Wed, May 06, 2020 at 02:59:26PM +0200, SeongJae Park wrote:
> > TL; DR: It was not kernel's fault, but the benchmark program.
> >
> > So, the problem is reproducible using the lebench[1] only. I carefully read
> > it's code
On Wed, May 06, 2020 at 02:59:26PM +0200, SeongJae Park wrote:
> TL; DR: It was not kernel's fault, but the benchmark program.
>
> So, the problem is reproducible using the lebench[1] only. I carefully read
> it's code again.
>
> Before running the problem occurred "poll big" sub test, lebench
On Wed, May 6, 2020 at 5:59 AM SeongJae Park wrote:
>
> TL; DR: It was not kernel's fault, but the benchmark program.
>
> So, the problem is reproducible using the lebench[1] only. I carefully read
> it's code again.
>
> Before running the problem occurred "poll big" sub test, lebench executes
>
TL; DR: It was not kernel's fault, but the benchmark program.
So, the problem is reproducible using the lebench[1] only. I carefully read
it's code again.
Before running the problem occurred "poll big" sub test, lebench executes
"context switch" sub test. For the test, it sets the cpu
On Tue, 05 May 2020 12:00:49 -0700 (PDT) David Miller
wrote:
> From: David Miller
> Date: Tue, 05 May 2020 11:48:25 -0700 (PDT)
>
> > Series applied and queued up for -stable, thanks.
>
> Nevermind, this doesn't even compile.
>
> net/smc/af_smc.c: In function ‘smc_switch_to_fallback’:
>
From: David Miller
Date: Tue, 05 May 2020 11:48:25 -0700 (PDT)
> Series applied and queued up for -stable, thanks.
Nevermind, this doesn't even compile.
net/smc/af_smc.c: In function ‘smc_switch_to_fallback’:
net/smc/af_smc.c:473:19: error: ‘smc->clcsock->wq’ is a pointer; did you mean
to use
On Tue, May 05, 2020 at 08:34:02PM +0200, SeongJae Park wrote:
> On Tue, 5 May 2020 11:17:07 -0700 "Paul E. McKenney"
> wrote:
>
> > On Tue, May 05, 2020 at 07:56:05PM +0200, SeongJae Park wrote:
> > > On Tue, 5 May 2020 10:30:36 -0700 "Paul E. McKenney"
> > > wrote:
> > >
> > > > On Tue,
From: SeongJae Park
Date: Tue, 5 May 2020 10:10:33 +0200
> From: SeongJae Park
>
> The commit 6d7855c54e1e ("sockfs: switch to ->free_inode()") made the
> deallocation of 'socket_alloc' to be done asynchronously using RCU, as
> same to 'sock.wq'. And the following commit 333f7909a857
On Tue, May 05, 2020 at 08:40:07PM +0200, SeongJae Park wrote:
> On Tue, 5 May 2020 11:27:20 -0700 "Paul E. McKenney"
> wrote:
>
> > On Tue, May 05, 2020 at 07:49:43PM +0200, SeongJae Park wrote:
> > > On Tue, 5 May 2020 10:23:58 -0700 "Paul E. McKenney"
> > > wrote:
> > >
> > > > On Tue,
On Tue, 5 May 2020 11:27:20 -0700 "Paul E. McKenney" wrote:
> On Tue, May 05, 2020 at 07:49:43PM +0200, SeongJae Park wrote:
> > On Tue, 5 May 2020 10:23:58 -0700 "Paul E. McKenney"
> > wrote:
> >
> > > On Tue, May 05, 2020 at 09:25:06AM -0700, Eric Dumazet wrote:
> > > >
> > > >
> > > > On
On Tue, 5 May 2020 11:17:07 -0700 "Paul E. McKenney" wrote:
> On Tue, May 05, 2020 at 07:56:05PM +0200, SeongJae Park wrote:
> > On Tue, 5 May 2020 10:30:36 -0700 "Paul E. McKenney"
> > wrote:
> >
> > > On Tue, May 05, 2020 at 07:05:53PM +0200, SeongJae Park wrote:
> > > > On Tue, 5 May 2020
On Tue, May 05, 2020 at 07:49:43PM +0200, SeongJae Park wrote:
> On Tue, 5 May 2020 10:23:58 -0700 "Paul E. McKenney"
> wrote:
>
> > On Tue, May 05, 2020 at 09:25:06AM -0700, Eric Dumazet wrote:
> > >
> > >
> > > On 5/5/20 9:13 AM, SeongJae Park wrote:
> > > > On Tue, 5 May 2020 09:00:44
On Tue, May 05, 2020 at 07:56:05PM +0200, SeongJae Park wrote:
> On Tue, 5 May 2020 10:30:36 -0700 "Paul E. McKenney"
> wrote:
>
> > On Tue, May 05, 2020 at 07:05:53PM +0200, SeongJae Park wrote:
> > > On Tue, 5 May 2020 09:37:42 -0700 Eric Dumazet
> > > wrote:
> > >
> > > >
> > > >
> > >
On Tue, 5 May 2020 10:28:50 -0700 "Paul E. McKenney" wrote:
> On Tue, May 05, 2020 at 09:37:42AM -0700, Eric Dumazet wrote:
> >
> >
> > On 5/5/20 9:31 AM, Eric Dumazet wrote:
> > >
> > >
> > > On 5/5/20 9:25 AM, Eric Dumazet wrote:
> > >>
> > >>
> > >> On 5/5/20 9:13 AM, SeongJae Park wrote:
On Tue, 5 May 2020 10:30:36 -0700 "Paul E. McKenney" wrote:
> On Tue, May 05, 2020 at 07:05:53PM +0200, SeongJae Park wrote:
> > On Tue, 5 May 2020 09:37:42 -0700 Eric Dumazet
> > wrote:
> >
> > >
> > >
> > > On 5/5/20 9:31 AM, Eric Dumazet wrote:
> > > >
> > > >
> > > > On 5/5/20 9:25
On Tue, 5 May 2020 10:23:58 -0700 "Paul E. McKenney" wrote:
> On Tue, May 05, 2020 at 09:25:06AM -0700, Eric Dumazet wrote:
> >
> >
> > On 5/5/20 9:13 AM, SeongJae Park wrote:
> > > On Tue, 5 May 2020 09:00:44 -0700 Eric Dumazet
> > > wrote:
> > >
> > >> On Tue, May 5, 2020 at 8:47 AM
On Tue, May 05, 2020 at 07:05:53PM +0200, SeongJae Park wrote:
> On Tue, 5 May 2020 09:37:42 -0700 Eric Dumazet wrote:
>
> >
> >
> > On 5/5/20 9:31 AM, Eric Dumazet wrote:
> > >
> > >
> > > On 5/5/20 9:25 AM, Eric Dumazet wrote:
> > >>
> > >>
> > >> On 5/5/20 9:13 AM, SeongJae Park wrote:
>
On Tue, May 05, 2020 at 09:37:42AM -0700, Eric Dumazet wrote:
>
>
> On 5/5/20 9:31 AM, Eric Dumazet wrote:
> >
> >
> > On 5/5/20 9:25 AM, Eric Dumazet wrote:
> >>
> >>
> >> On 5/5/20 9:13 AM, SeongJae Park wrote:
> >>> On Tue, 5 May 2020 09:00:44 -0700 Eric Dumazet
> >>> wrote:
> >>>
>
On Tue, May 05, 2020 at 09:25:06AM -0700, Eric Dumazet wrote:
>
>
> On 5/5/20 9:13 AM, SeongJae Park wrote:
> > On Tue, 5 May 2020 09:00:44 -0700 Eric Dumazet wrote:
> >
> >> On Tue, May 5, 2020 at 8:47 AM SeongJae Park wrote:
> >>>
> >>> On Tue, 5 May 2020 08:20:50 -0700 Eric Dumazet
> >>>
On Tue, 5 May 2020 09:37:42 -0700 Eric Dumazet wrote:
>
>
> On 5/5/20 9:31 AM, Eric Dumazet wrote:
> >
> >
> > On 5/5/20 9:25 AM, Eric Dumazet wrote:
> >>
> >>
> >> On 5/5/20 9:13 AM, SeongJae Park wrote:
> >>> On Tue, 5 May 2020 09:00:44 -0700 Eric Dumazet
> >>> wrote:
> >>>
> On
On 5/5/20 9:31 AM, Eric Dumazet wrote:
>
>
> On 5/5/20 9:25 AM, Eric Dumazet wrote:
>>
>>
>> On 5/5/20 9:13 AM, SeongJae Park wrote:
>>> On Tue, 5 May 2020 09:00:44 -0700 Eric Dumazet wrote:
>>>
On Tue, May 5, 2020 at 8:47 AM SeongJae Park wrote:
>
> On Tue, 5 May 2020 08:20:50
On 5/5/20 9:25 AM, Eric Dumazet wrote:
>
>
> On 5/5/20 9:13 AM, SeongJae Park wrote:
>> On Tue, 5 May 2020 09:00:44 -0700 Eric Dumazet wrote:
>>
>>> On Tue, May 5, 2020 at 8:47 AM SeongJae Park wrote:
On Tue, 5 May 2020 08:20:50 -0700 Eric Dumazet
wrote:
>
>
On Tue, May 05, 2020 at 09:00:44AM -0700, Eric Dumazet wrote:
> > Not exactly the 10,000,000, as it is only the possible highest number, but I
> > was able to observe clear exponential increase of the number of the objects
> > using slabtop. Before the start of the problematic workload, the
On 5/5/20 9:13 AM, SeongJae Park wrote:
> On Tue, 5 May 2020 09:00:44 -0700 Eric Dumazet wrote:
>
>> On Tue, May 5, 2020 at 8:47 AM SeongJae Park wrote:
>>>
>>> On Tue, 5 May 2020 08:20:50 -0700 Eric Dumazet
>>> wrote:
>>>
On 5/5/20 8:07 AM, SeongJae Park wrote:
> On
On Tue, 5 May 2020 09:00:44 -0700 Eric Dumazet wrote:
> On Tue, May 5, 2020 at 8:47 AM SeongJae Park wrote:
> >
> > On Tue, 5 May 2020 08:20:50 -0700 Eric Dumazet
> > wrote:
> >
> > >
> > >
> > > On 5/5/20 8:07 AM, SeongJae Park wrote:
> > > > On Tue, 5 May 2020 07:53:39 -0700 Eric Dumazet
On Tue, May 5, 2020 at 8:47 AM SeongJae Park wrote:
>
> On Tue, 5 May 2020 08:20:50 -0700 Eric Dumazet wrote:
>
> >
> >
> > On 5/5/20 8:07 AM, SeongJae Park wrote:
> > > On Tue, 5 May 2020 07:53:39 -0700 Eric Dumazet
> > > wrote:
> > >
> >
> > >> Why do we have 10,000,000 objects around ?
On Tue, 5 May 2020 08:20:50 -0700 Eric Dumazet wrote:
>
>
> On 5/5/20 8:07 AM, SeongJae Park wrote:
> > On Tue, 5 May 2020 07:53:39 -0700 Eric Dumazet wrote:
> >
>
> >> Why do we have 10,000,000 objects around ? Could this be because of
> >> some RCU problem ?
> >
> > Mainly because of a
On 5/5/20 8:07 AM, SeongJae Park wrote:
> On Tue, 5 May 2020 07:53:39 -0700 Eric Dumazet wrote:
>
>> Why do we have 10,000,000 objects around ? Could this be because of
>> some RCU problem ?
>
> Mainly because of a long RCU grace period, as you guess. I have no idea how
> the grace period
On Tue, 5 May 2020 07:53:39 -0700 Eric Dumazet wrote:
> On Tue, May 5, 2020 at 4:54 AM SeongJae Park wrote:
> >
> > CC-ing sta...@vger.kernel.org and adding some more explanations.
> >
> > On Tue, 5 May 2020 10:10:33 +0200 SeongJae Park wrote:
> >
> > > From: SeongJae Park
> > >
> > > The
On Tue, May 5, 2020 at 4:54 AM SeongJae Park wrote:
>
> CC-ing sta...@vger.kernel.org and adding some more explanations.
>
> On Tue, 5 May 2020 10:10:33 +0200 SeongJae Park wrote:
>
> > From: SeongJae Park
> >
> > The commit 6d7855c54e1e ("sockfs: switch to ->free_inode()") made the
> >
On Tue, 2020-05-05 at 13:54 +0200, SeongJae Park wrote:
> CC-ing sta...@vger.kernel.org and adding some more explanations.
>
> On Tue, 5 May 2020 10:10:33 +0200 SeongJae Park
> wrote:
>
> >
> > From: SeongJae Park
> >
> > The commit 6d7855c54e1e ("sockfs: switch to ->free_inode()") made
> >
CC-ing sta...@vger.kernel.org and adding some more explanations.
On Tue, 5 May 2020 10:10:33 +0200 SeongJae Park wrote:
> From: SeongJae Park
>
> The commit 6d7855c54e1e ("sockfs: switch to ->free_inode()") made the
> deallocation of 'socket_alloc' to be done asynchronously using RCU, as
>
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