Re: b_freelist TAILQ/SLIST

2013-06-29 Thread Alexander Motin
On 29.06.2013 05:35, Konstantin Belousov wrote: On Sat, Jun 29, 2013 at 01:15:19AM +0300, Alexander Motin wrote: On 28.06.2013 09:57, Konstantin Belousov wrote: On Fri, Jun 28, 2013 at 12:26:44AM +0300, Alexander Motin wrote: While doing some profiles of GEOM/CAM IOPS scalability, on some test

Re: b_freelist TAILQ/SLIST

2013-06-29 Thread Konstantin Belousov
On Sat, Jun 29, 2013 at 10:06:11AM +0300, Alexander Motin wrote: > I understand that lock attempt will steal cache line from lock owner. > What I don't very understand is why avoiding it helps performance in > this case. Indeed, having mutex on own cache line will not let other > cores to steal