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.
next prev parent 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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