On Wed, Mar 09, 2016 at 07:39:19PM +0300, Cyrill Gorcunov wrote: > On Sun, Mar 06, 2016 at 08:06:41PM +0300, Cyrill Gorcunov wrote: > > > > > > Well, this looks like LOCKDEP kernel. Are you really running LOCKDEP on > > > production kernels ? > > > > Hi Eric, David. Sorry for the delay. Finally I've measured the > latency on the hw. It's i7-2600 cpu with 16G of memory. Here > are the collected data. > > --- > Unpatched vanilla > ================= > > commit 7f02bf6b5f5de90b7a331759b5364e41c0f39bf9 > Author: Linus Torvalds <torva...@linux-foundation.org> > Date: Tue Mar 8 09:41:20 2016 -0800 > > Creating new addresses > ---------------------- > 19.26% [kernel] [k] check_lifetime > 13.88% [kernel] [k] __inet_insert_ifa > 13.01% [kernel] [k] inet_rtm_newaddr > > Release > ------- > 20.96% [kernel] [k] _raw_spin_lock > 17.79% [kernel] [k] preempt_count_add
above line is an indication that you have: #if defined(CONFIG_DEBUG_PREEMPT) || defined(CONFIG_PREEMPT_TRACER) turning it off will speed up things significantly. > 14.79% [kernel] [k] __local_bh_enable_ip > 13.08% [kernel] [k] preempt_count_sub > 9.21% [kernel] [k] nf_ct_iterate_cleanup > 3.15% [kernel] [k] _raw_spin_unlock > 2.80% [kernel] [k] nf_conntrack_lock > 2.67% [kernel] [k] in_lock_functions > 2.63% [kernel] [k] get_parent_ip > 2.26% [kernel] [k] __inet_del_ifa > 2.17% [kernel] [k] fib_del_ifaddr > 1.77% [kernel] [k] _cond_resched
