Re: Re: Re: Re: [PATCH net v2 0/2] Revert the 'socket_alloc' life cycle change

2020-05-05 Thread SeongJae Park
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 0

Re: Re: Re: Re: [PATCH net v2 0/2] Revert the 'socket_alloc' life cycle change

2020-05-05 Thread Paul E. McKenney
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, May

Re: Re: Re: Re: Re: [PATCH net v2 0/2] Revert the 'socket_alloc' life cycle change

2020-05-06 Thread SeongJae Park
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 affinity[

Re: Re: Re: Re: Re: [PATCH net v2 0/2] Revert the 'socket_alloc' life cycle change

2020-05-06 Thread Eric Dumazet
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 >

Re: Re: Re: Re: Re: [PATCH net v2 0/2] Revert the 'socket_alloc' life cycle change

2020-05-06 Thread Paul E. McKenney
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 e

Re: Re: Re: Re: Re: Re: [PATCH net v2 0/2] Revert the 'socket_alloc' life cycle change

2020-05-06 Thread SeongJae Park
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 again.