Re: [cgroup] a0f9ec1f181: -4.3% will-it-scale.per_thread_ops

2014-05-15 Thread Fengguang Wu
On Thu, May 15, 2014 at 02:14:22AM -0400, Tejun Heo wrote: > Hello, Fengguang. > > On Thu, May 15, 2014 at 02:00:26PM +0800, Fengguang Wu wrote: > > > > 2074b6e38668e62 a0f9ec1f181534694cb5bf40b > > > > --- - > > > > 2074b6e38668e62 is the base of comparison.

Re: [cgroup] a0f9ec1f181: -4.3% will-it-scale.per_thread_ops

2014-05-15 Thread Mike Galbraith
On Thu, 2014-05-15 at 02:14 -0400, Tejun Heo wrote: > Hmmm... I'm completely stumped. The commit in question has nothing to > do with tmpfs. It only affects three cgroup files - "tasks", > "cgroup.procs" and "release_agent". It can't possibly have any effect > on tmpfs operation. Maybe random

Re: [cgroup] a0f9ec1f181: -4.3% will-it-scale.per_thread_ops

2014-05-14 Thread Tejun Heo
Hello, Fengguang. On Thu, May 15, 2014 at 02:00:26PM +0800, Fengguang Wu wrote: > > > 2074b6e38668e62 a0f9ec1f181534694cb5bf40b > > > --- - > > 2074b6e38668e62 is the base of comparison. So "-4.3% > will-it-scale.per_thread_ops" > in the below line means a0f

Re: [cgroup] a0f9ec1f181: -4.3% will-it-scale.per_thread_ops

2014-05-14 Thread Fengguang Wu
Hi Tejun, On Thu, May 15, 2014 at 12:55:17AM -0400, Tejun Heo wrote: > Hello, > > On Thu, May 15, 2014 at 12:50:39PM +0800, Jet Chen wrote: > > FYI, we noticed the below changes on > > > > git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git > > review-kill-tree_mutex > > commit a0f9ec1f

Re: [cgroup] a0f9ec1f181: -4.3% will-it-scale.per_thread_ops

2014-05-14 Thread Tejun Heo
Hello, On Thu, May 15, 2014 at 12:50:39PM +0800, Jet Chen wrote: > FYI, we noticed the below changes on > > git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git > review-kill-tree_mutex > commit a0f9ec1f181534694cb5bf40b7b56515b8cabef9 ("cgroup: use > cgroup_kn_lock_live() in other cgrou

[cgroup] a0f9ec1f181: -4.3% will-it-scale.per_thread_ops

2014-05-14 Thread Jet Chen
Hi Tejun, FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git review-kill-tree_mutex commit a0f9ec1f181534694cb5bf40b7b56515b8cabef9 ("cgroup: use cgroup_kn_lock_live() in other cgroup kernfs methods") Test case : lkp-nex05/will-it-scale/writeseek