On Sun, Mar 06, 2016 at 08:23:12AM -0800, Eric Dumazet wrote: > On dim., 2016-03-06 at 13:09 +0300, Cyrill Gorcunov wrote: > > > Anyway, then I run this script for 255 as parameter > > in one pass which gen. requests to create 65025 addresses > > and kernel start complaining: > > > > Perf output > > ----------- > > 24.95% [kernel] [k] __local_bh_enable_ip > > 21.52% [kernel] [k] lock_acquire > > 15.54% [kernel] [k] lock_release > > 9.84% [kernel] [k] lock_is_held > > 7.47% [kernel] [k] lock_acquired > > 4.08% [kernel] [k] __local_bh_disable_ip > > Well, this looks like LOCKDEP kernel. Are you really running LOCKDEP on > production kernels ?
This is vanilla kernel with most of debug features turned on, not our production one. IIRC in production we don't use lockdep. I can run tests with lockdep turned off. Still I think I have to run tests on real hardware instead of VM to provide you back some sane numbers, and once we get back from holidays (which will be at Wednesday) I gonna build the vanilla and run it on real machine with both David's patches and measure the latency.
