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From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David Miller <davem@davemloft.net>,
	netdev@vger.kernel.org, solar@openwall.com, vvs@virtuozzo.com,
	avagin@virtuozzo.com, xemul@virtuozzo.com,
	vdavydov@virtuozzo.com, khorenko@virtuozzo.com
Subject: Re: [RFC] net: ipv4 -- Introduce ifa limit per net
Date: Sun, 6 Mar 2016 20:06:41 +0300	[thread overview]
Message-ID: <20160306170641.GA8820@uranus.lan> (raw)
In-Reply-To: <1457281392.2663.5.camel@edumazet-ThinkPad-T530>

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.

  reply	other threads:[~2016-03-06 17:06 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-04 21:39 [RFC] net: ipv4 -- Introduce ifa limit per net Cyrill Gorcunov
2016-03-04 22:50 ` David Miller
2016-03-05  0:08   ` Eric Dumazet
2016-03-05  4:11     ` David Miller
2016-03-05  7:18       ` Cyrill Gorcunov
2016-03-05 15:57       ` Cyrill Gorcunov
2016-03-05 16:33         ` David Miller
2016-03-05 17:00           ` Cyrill Gorcunov
2016-03-05 18:44           ` Cyrill Gorcunov
2016-03-06 10:09             ` Cyrill Gorcunov
2016-03-06 16:23               ` Eric Dumazet
2016-03-06 17:06                 ` Cyrill Gorcunov [this message]
2016-03-09 16:39                   ` Cyrill Gorcunov
2016-03-09 16:51                     ` Cyrill Gorcunov
2016-03-09 16:58                     ` Alexei Starovoitov
2016-03-09 17:09                       ` Cyrill Gorcunov
2016-03-09 17:24                         ` David Miller
2016-03-09 17:53                           ` Cyrill Gorcunov
2016-03-09 19:55                             ` Cyrill Gorcunov
2016-03-09 20:27                             ` David Miller
2016-03-09 20:41                               ` Cyrill Gorcunov
2016-03-09 20:47                                 ` David Miller
2016-03-09 20:57                                   ` Cyrill Gorcunov
2016-03-09 21:10                                     ` David Miller
2016-03-09 21:16                                       ` Cyrill Gorcunov
2016-03-10 10:20                                         ` Cyrill Gorcunov
2016-03-10 11:03                                           ` Cyrill Gorcunov
2016-03-10 15:09                                             ` Cyrill Gorcunov
2016-03-10 18:01                                               ` David Miller
2016-03-10 18:48                                                 ` Cyrill Gorcunov
2016-03-10 19:02                                                 ` Cong Wang
2016-03-10 19:55                                                   ` David Miller
2016-03-10 20:01                                                     ` Cyrill Gorcunov
2016-03-10 20:03                                                       ` David Miller
2016-03-10 20:13                                                         ` Cyrill Gorcunov
2016-03-10 20:19                                                           ` Cyrill Gorcunov
2016-03-10 21:05                                                           ` David Miller
2016-03-10 21:19                                                             ` Cyrill Gorcunov
2016-03-10 21:59                                                               ` Cyrill Gorcunov
2016-03-10 22:36                                                                 ` David Miller
2016-03-10 22:40                                                                   ` Cyrill Gorcunov
2016-03-11 20:40                                                                     ` David Miller
2016-03-11 20:58                                                                       ` Florian Westphal
2016-03-11 21:00                                                                       ` Cyrill Gorcunov
2016-03-11 21:22                                                                       ` Cyrill Gorcunov
2016-03-11 21:59                                                                         ` Cyrill Gorcunov
2016-03-14  3:29                                                                           ` David Miller
2016-03-10 21:09                                                     ` Cong Wang
2016-03-09 17:19                     ` David Miller
2016-03-05  6:58   ` Cyrill Gorcunov

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